Harry S. Truman

Harry S. Truman (May 8, 1884 – December 26, 1972) was the 33rd president of the United States, serving from 1945 to 1953. As the 34th vice president in 1945, he assumed the presidency upon the death of Franklin D. Roosevelt in April. Truman set up the Marshall Plan to rebuild the badly damaged economy of Western Europe. He established the Truman Doctrine and supported the founding of NATO to contain the expansion of Soviet communism. A member of the Democratic Party, he proposed numerous New Deal coalition liberal domestic reforms, but few were enacted by the conservative coalition that dominated the United States Congress. Born in rural Missouri, Truman was raised in Independence, Missouri, and during World War I, he fought in France as a captain in the Field Artillery. Returning home, he opened a haberdashery in Kansas City, Missouri, and was elected as a judge of Jackson County in 1922. Truman was elected to the U.S. Senate for Missouri in 1934. Between 1940 and 1944, he gained national prominence as the chairman of the Truman Committee, which aimed to reduce waste and inefficiency in wartime contracts. Truman was elected vice president in the 1944 presidential election and became president upon Roosevelt's death in April 1945. Only then was he told about the ongoing Manhattan Project and the atomic bomb. Truman authorized the first and only use of nuclear weapons in war against the Japanese cities of Hiroshima and Nagasaki. Truman's administration engaged in an internationalist foreign policy by working closely with Britain. Truman staunchly denounced isolationism. He energized the New Deal coalition during the 1948 presidential election, despite some Democrats splitting off into the Dixiecrats, and defeated both the Republican Party nominee Thomas E. Dewey and Dixiecrat Strom Thurmond. Truman presided over the onset of the Cold War in 1947. He oversaw the Berlin Airlift and the Marshall Plan in 1948. With America's involvement in the Korean War (1950–1953), South Korea repelled the invasion by North Korea. Domestically, the postwar economic challenges such as strikes and inflation created a mixed reaction over the effectiveness of his administration. In 1948, he proposed that Congress should pass comprehensive civil rights legislation. Congress refused, so Truman issued Executive Order 9980 and Executive Order 9981, which prohibited discrimination in agencies of the federal government and desegregated the United States Armed Forces. Investigations revealed corruption in parts of the Truman administration, and this became a major campaign issue in the 1952 presidential election, although they did not implicate Truman himself. He was eligible for reelection in 1952 but he chose not to run due to poor polling. Subsequently, Truman went into a retirement marked by the founding of his presidential library and the publication of his memoirs. It was long believed that Truman's retirement years were financially difficult, resulting in Congress establishing a pension for former presidents. However, evidence eventually emerged that he amassed considerable wealth, some of it during his presidency. When Truman left office, his administration was heavily criticized. Despite this controversy, historians consistently rank Truman in the first quartile of U.S. presidents. In addition, critical reassessments of his presidency have improved his reputation among historians and the general population.

Early life, family, and education

Harry S. Truman was born in Lamar, Missouri, on May 8, 1884, the oldest child of John Anderson Truman and Martha Ellen Young Truman. He was named for his maternal uncle, Harrison "Harry" Young. His middle initial, "S", is not an abbreviation of one particular name. Rather, it honors both his grandfathers, Anderson Shipp Truman and Solomon Young, a somewhat common practice in the American South at the time. A brother, John Vivian, was born soon after Harry, followed by sister Mary Jane. While Truman's ancestry was primarily English, he also had some Scots-Irish, German, and French ancestry. John Truman was a farmer and livestock dealer. The family lived in Lamar until Harry was ten months old, when they moved to a farm near Harrisonville, Missouri. They next moved to Belton and in 1887 to his grandparents' 600-acre (240 ha) farm in Grandview. When Truman was six, his parents moved to Independence, Missouri, so he could attend the Presbyterian Church Sunday School. He did not attend a conventional school until he was eight years old. While living in Independence, he served as a Shabbos goy for Jewish neighbors, doing tasks for them on Shabbat that their religion prevented them from doing on that day. Truman was interested in music, reading, history, and mathematics, all encouraged by his mother, with whom he was very close. As president, he solicited political as well as personal advice from her. Truman learned to play the piano at age seven and took lessons from Mrs. E.C. White, a well-respected teacher in Kansas City. He got up at five o'clock every morning to practice the piano, which he studied more than twice a week until he was fifteen, becoming quite a skilled player. During the 1900 Democratic National Convention in Kansas City, Truman served as a page. His father, a dedicated Democrat, had numerous friends involved in the Missouri state Democratic Party, which helped young Harry secure his first political position. At the convention, Truman witnessed a speech by the party's nominee for that year's presidential election, William Jennings Bryan, who would later become his political hero. After graduating from Independence High School in 1901, Truman took classes at Spalding's Commercial College, a Kansas City business school. He studied bookkeeping, shorthand, and typing but stopped after a year. Segregation was practiced and largely accepted where Truman grew up. While he later came to support civil rights, early letters of the young Truman reflected his upbringing and prejudices against African, Jewish and Asian Americans.

Working career

Truman was employed briefly in the mailroom of The Kansas City Star before making use of his business college experience to obtain a job as a timekeeper for construction crews on the Atchison, Topeka and Santa Fe Railway, which required him to sleep in workmen's camps along the rail lines. Truman and his brother Vivian later worked as clerks at the National Bank of Commerce in Kansas City. In 1906, Truman returned to the Grandview farm, where he lived until entering the army in 1917. During this period, he courted Bess Wallace. He proposed in 1911, but she turned him down. Believing Wallace turned him down because he did not have much money, Truman later said he intended to propose again, but he wanted to have a better income than that earned by a farmer. In fact, Wallace later told Truman she did not intend to marry, but if she did, it would be to him. Still determined to improve his finances, during his years on the farm and immediately after World War I, Truman became active in several business ventures. These included a lead and zinc mine near Commerce, Oklahoma, a company that bought land and leased the oil drilling rights to prospectors, and speculation in Kansas City real estate. Truman occasionally derived some income from these enterprises, but none proved successful in the long term. Truman is the only president since William McKinley (elected in 1896) who did not earn a college degree. In addition to having briefly attended business college, from 1923 to 1925 he took night courses toward an LL.B. at the Kansas City Law School (now the University of Missouri–Kansas City School of Law) but dropped out after losing reelection as county judge. He was informed by attorneys in the Kansas City area that his education and experience were probably sufficient to receive a license to practice law but did not pursue it because he won election as presiding judge. While serving as president in 1947, Truman applied for a law license. A friend who was an attorney began working out the arrangements, and informed Truman that his application had to be notarized. By the time Truman received this information he had changed his mind, so he never followed up. After the discovery of Truman's application in 1996 the Missouri Supreme Court issued him a posthumous honorary law license.

Military service

=== National Guard === Due to the lack of funds for college, Truman considered attending the United States Military Academy at West Point, New York, which had no tuition, but he was refused an appointment because of poor eyesight. He enlisted in the Missouri National Guard in 1905 and served until 1911 in the Kansas City-based Battery B, 2nd Missouri Field Artillery Regiment, in which he attained the rank of corporal. At his induction, his eyesight without glasses was unacceptable: 20/50 in the right eye and 20/400 in the left (the latter being past the standard for legal blindness). The second time he took the test, he passed by secretly memorizing the eye chart. He was described as 5 feet 10 inches (178 cm) tall, gray eyed, dark haired and of light complexion.

World War I

When the United States entered World War I on April 6, 1917, Truman rejoined Battery B, successfully recruiting new soldiers for the expanding unit, for which he was elected as their first lieutenant. Before deployment to France, Truman was sent for training to Camp Doniphan, Fort Sill, near Lawton, Oklahoma, when his regiment was federalized as the 129th Field Artillery. The regimental commander during its training was Robert M. Danford, who later served as the Army's Chief of Field Artillery. Truman recalled that he learned more practical, useful information from Danford in six weeks than from six months of formal Army instruction, and when Truman served as an artillery instructor, he consciously patterned his approach on Danford's. Truman also ran the camp canteen with Edward Jacobson, a clothing store clerk he knew from Kansas City. Unlike most canteens funded by unit members, which usually lost money, the canteen operated by Truman and Jacobson turned a profit, returning each soldier's initial $2 investment and $10,000 in dividends in six months. At Fort Sill, Truman met Lieutenant James M. Pendergast, nephew of Tom Pendergast, a Kansas City political boss, a connection that had a profound influence on Truman's later life. In mid-1918, about one million soldiers of the American Expeditionary Forces (AEF) were in France. Truman was promoted to captain effective April 23, and in July became commander of the newly arrived Battery D, 129th Field Artillery, 35th Division. Battery D was known for its discipline problems, and Truman was initially unpopular because of his efforts to restore order. Despite attempts by the men to intimidate him into quitting, Truman succeeded by making his corporals and sergeants accountable for discipline. He promised to back them up if they performed capably and reduce them to private if they did not. In an event memorialized in battery lore as "The Battle of Who Run", his soldiers began to flee during a sudden night attack by the Germans in the Vosges Mountains; Truman succeeded at ordering his men to stay and fight, using profanity from his railroad days. The men were so surprised to hear Truman use such language that they immediately obeyed. Truman's unit joined in a massive prearranged assault barrage on September 26, 1918, at the opening of the Meuse–Argonne offensive. They advanced with difficulty over pitted terrain to follow the infantry, and set up an observation post west of Cheppy. On September 27, Truman saw through his binoculars an enemy artillery battery deploying across a river in a position which would allow them to fire upon the neighboring 28th Division. Truman's orders limited him to targets facing the 35th Division, but he ignored this and patiently waited until the Germans had walked their horses well away from their guns, ensuring they could not relocate out of range of Truman's battery. He then ordered his men to open fire, and their attack destroyed the enemy battery. His actions were credited with saving the lives of 28th Division soldiers who otherwise would have come under fire from the Germans. Truman was given a dressing down by his regimental commander, Colonel Karl D. Klemm, who threatened to convene a court-martial, but Klemm never followed through, and Truman was not punished.

In other action during the Meuse–Argonne offensive, Truman's battery provided support for George S. Patton's tank brigade, and fired some of the last shots of the war on November 11, 1918. Battery D did not lose any men while under Truman's command in France. To show their appreciation for his leadership, his men presented him with a large loving cup upon their return to the United States after the war. The war was a transformative experience in which Truman manifested his leadership qualities. He had entered the service in 1917 as a family farmer who had worked in clerical jobs that did not require the ability to motivate and direct others, but during the war, he gained leadership experience and a record of success that greatly enhanced and supported his post-war political career in Missouri. Truman was brought up in the Presbyterian and Baptist churches, but avoided revivals and sometimes ridiculed revivalist preachers. He rarely spoke about religion, which to him, primarily meant ethical behavior along traditional Protestant lines. Truman once wrote in a letter to his future wife, Bess: "You know that I know nothing about Lent and such things..." Most of the soldiers he commanded in the war were Catholics, and one of his close friends was the 129th Field Artillery's chaplain, Monsignor L. Curtis Tiernan. The two remained friends until Tiernan's death in 1960. Developing leadership and interpersonal skills that later made him a successful politician helped Truman get along with his Catholic soldiers, as he did with soldiers of other Christian denominations and the unit's Jewish members.

Officers' Reserve Corps

Truman was honorably discharged from the Army as a captain on May 6, 1919. In 1920, he was appointed a major in the Officers Reserve Corps. He became a lieutenant colonel in 1925 and a colonel in 1932. In the 1920s and 1930s he commanded 1st Battalion, 379th Field Artillery Regiment, 102nd Infantry Division. After promotion to colonel, Truman advanced to command of the regiment. After his election to the U.S. Senate, Truman was transferred to the General Assignments Group, a holding unit for less active officers, although he had not been consulted in advance. Truman protested his reassignment, which led to his resumption of regimental command. He remained an active reservist until the early 1940s. Truman volunteered for active military service during World War II, but was not accepted, partly because of age, and partly because President Franklin D. Roosevelt desired that senators and congressmen who belonged to the military reserves support the war effort by remaining in Congress, or by ending their active duty service and resuming their congressional seats. He was an inactive reservist from the early 1940s until retiring as a colonel in the then redesignated U.S. Army Reserve on January 20, 1953.

=== Military awards and decorations === Truman was awarded a World War I Victory Medal with two battle clasps (for St. Mihiel and Meuse-Argonne) and a Defensive Sector Clasp. He was also the recipient of two Armed Forces Reserve Medals. After the war, Truman almost always wore a bronze World War I victory lapel pin as a memento of his overseas service.

After the War

Marriage

After his wartime service, Truman returned to Independence, where he married Bess Wallace on June 28, 1919. The couple had one child, Mary Margaret Truman. Shortly before the wedding, Truman and Jacobson opened a haberdashery together at 104 West 12th Street in downtown Kansas City. After brief initial success, the store went bankrupt during the recession of 1921. Truman did not pay off the last of the debts from that venture until 1935, when he did so with the aid of banker William T. Kemper, who worked behind the scenes to enable Truman's brother Vivian to buy Truman's $5,600 promissory note during the asset sale of a bank that had failed in the Great Depression. The note had risen and fallen in value as it was bought and sold, interest accumulated and Truman made payments, so by the time the last bank to hold it failed, it was worth nearly $9,000. Thanks to Kemper's efforts, Vivian Truman was able to buy it for $1,000. Jacobson and Truman remained close friends even after their store failed, and Jacobson's advice to Truman on Zionism later played a role in the U.S. Government's decision to recognize Israel.

=== Jackson County judge === With the help of the Kansas City Democratic machine led by Tom Pendergast, Truman was elected in 1922 as County Court judge of Jackson County's eastern district—Jackson County's three-judge court included judges from the western district (Kansas City), the eastern district (the county outside Kansas City), and a presiding judge elected countywide. This was an administrative rather than a judicial court, similar to county commissions in many other jurisdictions. Truman succeeded James E. Gilday and served from January 1, 1923, to January 1, 1925. He lost his 1924 reelection campaign to Henry Rummel in a Republican wave led by President Calvin Coolidge's landslide election to a full term. Two years selling automobile club memberships convinced him that a public service career was safer for a family man approaching middle age, and he planned a run for presiding judge in 1926. Truman won the job in 1926 with the support of the Pendergast machine, and succeeded Elihu W. Hayes. Truman was re-elected in 1930; he served from January 1, 1927, to January 1, 1935, and was succeeded by Eugene I. Purcell. As presiding judge, Truman helped coordinate the Ten Year Plan, which transformed Jackson County and the Kansas City skyline with new public works projects, including an extensive series of roads and construction of a new Wight and Wight-designed County Court building. Also in 1926, he became president of the National Old Trails Road Association, and during his term he oversaw dedication of 12 Madonna of the Trail monuments to honor pioneer women. In 1933, Truman was named Missouri's director for the Federal Re-Employment program (part of the Civil Works Administration) at the request of Postmaster General James Farley. This was payback to Pendergast for delivering the Kansas City vote to Franklin D. Roosevelt in the 1932 presidential election. The appointment confirmed Pendergast's control over federal patronage jobs in Missouri and marked the zenith of his power. It also created a relationship between Truman and Roosevelt's aide Harry Hopkins and assured Truman's avid support for the New Deal.

U.S. Senator from Missouri

After serving as a county judge, Truman wanted to run for governor of Missouri or Congress, but Pendergast rejected these ideas. Truman then thought he might serve out his career in some well-paying county sinecure; circumstances changed when Pendergast reluctantly backed him as the machine's choice in the 1934 Democratic primary election for the U.S. Senate from Missouri, after Pendergast's first four choices had declined to run. In the primary, Truman defeated Congressmen John J. Cochran and Jacob L. Milligan with the solid support of Jackson County, which was crucial to his candidacy. Also critical were the contacts he had made statewide in his capacity as a county official, member of the Freemasons, military reservist, and member of the American Legion. In the general election, Truman defeated incumbent Republican Roscoe C. Patterson by nearly 20 percentage points in a continuing wave of pro-New Deal Democrats elected during the Great Depression. Truman assumed office with a reputation as "the Senator from Pendergast". He referred patronage decisions to Pendergast but maintained that he voted with his own conscience. He later defended the patronage decisions by saying that "by offering a little to the machine, [he] saved a lot". In his first term, Truman spoke out against corporate greed and the dangers of Wall Street speculators and other moneyed special interests attaining too much influence in national affairs. Though he served on the high-profile Appropriations and Interstate Commerce Committees, he was largely ignored by President Roosevelt and had trouble getting calls returned from the White House. During the U.S. Senate election in 1940, U.S. Attorney Maurice Milligan (former opponent Jacob Milligan's brother) and former governor Lloyd Stark both challenged Truman in the Democratic primary. Truman was politically weakened by Pendergast's imprisonment for income tax evasion the previous year; the senator had remained loyal, having claimed that Republican judges (not the Roosevelt administration) were responsible for the boss's downfall. St. Louis party leader Robert E. Hannegan's support of Truman proved crucial; he later brokered the deal that put Truman on the national ticket. In the end, Stark and Milligan split the anti-Pendergast vote in the Senate Democratic primary and Truman won by a total of 8,000 votes. In the November election, Truman defeated Republican Manvel H. Davis by 51–49 percent. As senator, Truman opposed both Nazi Germany and Communist Russia. Two days after Nazi Germany invaded the Soviet Union in June 1941, Truman said:

If we see that Germany is winning we ought to help Russia, and if Russia is winning we ought to help Germany, and that way let them kill as many as possible although I don't want to see Hitler victorious under any circumstances. This quote without its last part later became a staple in Soviet and later Russian propaganda as "evidence" of an American conspiracy to destroy the country.

Truman Committee

In late 1940, Truman traveled to various military bases. The waste and profiteering he saw led him to use his chairmanship of the Committee on Military Affairs Subcommittee on War Mobilization to start investigations into abuses while the nation prepared for war. A new special committee was set up under Truman to conduct a formal investigation; the White House supported this plan rather than weather a more hostile probe by the House of Representatives. The main mission of the committee was to expose and fight waste and corruption in the gigantic government wartime contracts. Truman's initiative convinced Senate leaders of the necessity for the committee, which reflected his demands for honest and efficient administration and his distrust of big business and Wall Street. Truman managed the committee "with extraordinary skill" and usually achieved consensus, generating heavy media publicity that gave him a national reputation. Activities of the Truman Committee ranged from criticizing the "dollar-a-year men" hired by the government, many of whom proved ineffective, to investigating a shoddily built New Jersey housing project for war workers. In March 1944, Truman attempted to probe the expensive Manhattan Project but was persuaded by Secretary of War Henry L. Stimson to discontinue with the investigation. The committee reportedly saved as much as $15 billion (equivalent to $260 billion in 2025), and its activities put Truman on the cover of Time magazine. According to the Senate's historical minutes, in leading the committee, "Truman erased his earlier public image as an errand-runner for Kansas City politicos", and "no senator ever gained greater political benefits from chairing a special investigating committee than did Missouri's Harry S. Truman."

Vice presidency (1945)

Roosevelt's advisors knew that Roosevelt might not live out a fourth term and that his vice president would very likely become the next president. Henry A. Wallace had served as Roosevelt's vice president for four years and was popular on the left, but he was viewed as too far to the left and too friendly to labor for some of Roosevelt's advisers. The President and several of his confidantes wanted to replace Wallace with someone more acceptable to Democratic Party leaders. Outgoing Democratic National Committee chairman Frank C. Walker, incoming chairman Hannegan, party treasurer Edwin W. Pauley, Bronx party boss Ed Flynn, Chicago Mayor Edward Joseph Kelly, and lobbyist George E. Allen all wanted to keep Wallace off the ticket. Roosevelt told party leaders that he would accept either Truman or Supreme Court Justice William O. Douglas. State and city party leaders strongly preferred Truman, and Roosevelt agreed. Truman had repeatedly said that he was not in the race and that he did not want the vice presidency, and he remained reluctant. One reason was that his wife and sister Mary Jane were both on his Senate staff payroll, and he feared negative publicity. Truman did not campaign for the vice-presidential spot, though he welcomed the attention as evidence that he had become more than the "Senator from Pendergast". Truman's nomination was dubbed the "Second Missouri Compromise" and was well received. The Roosevelt–Truman ticket achieved a 432–99 electoral-vote victory in the election, defeating the Republican ticket of Governor Thomas E. Dewey of New York and running mate Governor John Bricker of Ohio. Truman was sworn in as vice president on January 20, 1945. After the inauguration, Truman called his mother, who instructed him, "Now you behave yourself." Truman's brief vice-presidency was relatively uneventful. Truman mostly presided over the Senate and attended parties and receptions. He kept the same offices from his Senate years, mostly using the Vice President's official office in the Capitol only to greet visitors. Truman was the first vice president to have a Secret Service agent assigned to him. Truman envisioned the office as a liaison between the Senate and the president. On April 10, 1945, Truman cast his only tie-breaking vote as president of the Senate, against a Robert A. Taft amendment that would have blocked the postwar delivery of Lend-Lease Act items contracted for during the war. Roosevelt rarely contacted him, even to inform him of major decisions; the president and vice president met alone together only twice during their time in office. In one of his first acts as vice president, Truman created some controversy when he attended the disgraced Pendergast's funeral. He brushed aside the criticism, saying simply, "He was always my friend and I have always been his." He had rarely discussed world affairs or domestic politics with Roosevelt; he was uninformed about major initiatives relating to the war and the top-secret Manhattan Project, which was about to test the world's first atomic bomb. In an event that generated negative publicity for Truman, he was photographed with actress Lauren Bacall sitting atop the piano at the National Press Club as he played for soldiers.

Truman had been vice president for 82 days when President Roosevelt died on April 12, 1945. Truman, presiding over the Senate, as usual, had just adjourned the session for the day and was preparing to have a drink in House Speaker Sam Rayburn's office when he received an urgent message to go immediately to the White House, where Eleanor Roosevelt told him that her husband had died after a massive cerebral hemorrhage. Truman asked her if there was anything he could do for her; she replied, "Is there anything we can do for you? For you are the one in trouble now!" He was sworn in as president at 7:09 p.m. in the West Wing of the White House, by Chief Justice Harlan F. Stone.

Presidency (1945–1953)

At the White House, Truman replaced Roosevelt holdovers with old confidants. The White House was badly understaffed with no more than a dozen aides; they could barely keep up with the heavy workflow of a greatly expanded executive department. Truman acted as his own chief of staff on a daily basis, as well as his own liaison with Congress—a body he already knew very well. He was not well prepared to deal with the press, and never achieved the jovial familiarity of FDR. Filled with latent anger about all the setbacks in his career, he bitterly mistrusted journalists. He saw them as enemies lying in wait for his next careless miscue. Truman was a very hard worker, often to the point of exhaustion, which left him testy, easily annoyed, and on the verge of appearing unpresidential or petty. In terms of major issues, he discussed them in depth with top advisors. He mastered the details of the federal budget as well as anyone. Truman was a poor speaker reading a text. However, his visible anger made him an effective stump speaker, denouncing his enemies as his supporters hollered back at him "Give Em Hell, Harry!" Truman surrounded himself with friends and appointed several to high positions that seemed beyond their competence, including his two secretaries of the treasury, Fred Vinson and John Snyder. His closest friend in the White House was his military aide Harry H. Vaughan, who knew little of military or foreign affairs and was criticized for trading access to the White House for expensive gifts. Truman loved to spend as much time as possible playing poker, telling stories and sipping bourbon. Alonzo Hamby notes that:

... to many in the general public, gambling and bourbon swilling, however low-key, were not quite presidential. Neither was the intemperant "give 'em hell" campaign style nor the occasional profane phrase uttered in public. Poker exemplified a larger problem: the tension between his attempts at an image of leadership necessarily a cut above the ordinary and an informality that at times appeared to verge on crudeness.

First term (1945–1949)

Assuming office

On his first full day, Truman told reporters: "Boys, if you ever pray, pray for me now. I don't know if you fellas ever had a load of hay fall on you, but when they told me what happened yesterday, I felt like the moon, the stars, and all the planets had fallen on me." Truman asked all the members of Roosevelt's cabinet to remain in place, but he soon replaced almost all of them, especially with friends from his Senate days.

Dropping atomic bombs on Japan

Truman benefited from a honeymoon period from the success in defeating Nazi Germany in Europe and the nation celebrated V-E Day on May 8, 1945, his 61st birthday. Although Truman was told briefly on the afternoon of April 12 that the United States had a new, highly destructive weapon, it was not until April 25 that Secretary of War Henry Stimson told him the details:

We have discovered the most terrible bomb in the history of the world. It may be the fire destruction prophesied in the Euphrates Valley Era, after Noah and his fabulous Ark. Truman journeyed to Berlin for the Potsdam Conference with Joseph Stalin and British prime minister Winston Churchill. He was there when he learned the Trinity test—the first atomic bomb—on July 16 had been successful. He hinted to Stalin that he was about to use a new kind of weapon against the Japanese. Though this was the first time the Soviets had been officially given information about the atomic bomb, Stalin was already aware of the bomb project—having learned about it through atomic espionage long before Truman did. In August, the Japanese government refused surrender demands as specifically outlined in the Potsdam Declaration. With the invasion of Japan imminent, Truman approved the schedule for dropping the two available bombs. Truman maintained the position that attacking Japan with atomic bombs saved many lives on both sides; a military estimate for the invasion of Japan submitted to Truman by Herbert Hoover indicated that an invasion could take at least a year and result in 500,000 to 1,000,000 Allied casualties. A study done for the staff of Secretary of War Henry L. Stimson by William Shockley estimated that invading Japan would cost 1.7–4 million American casualties, including 400,000–800,000 fatalities, and five to ten million Japanese fatalities if Japanese civilians participated in the defense of Japan. The U.S. Army Service Forces estimated in their document "Redeployment of the United States Army after the Defeat of Germany" that between June 1945 and December 1946 the Army would be required to furnish replacements for 43,000 dead and evacuated wounded every month during this period. From analysis of the replacement schedule and projected strengths in overseas theaters, it suggested that Army losses alone in those categories, excluding the Navy and Marine Corps, would be approximately 863,000 through the first part of 1947, of whom 267,000 would be killed or missing. The Soviet Union declared war on Japan on August 9 and invaded Manchuria. Japan agreed to surrender the following day.

Supporters of Truman's decision argue that, given the tenacious Japanese defense of the outlying islands, the bombings saved hundreds of thousands of lives of Allied prisoners, Japanese civilians, and combatants on both sides that would have been lost in an invasion of Japan. Some modern criticism has argued that the use of nuclear weapons was unnecessary, given that conventional attacks or a demonstrative bombing of an uninhabited area might have forced Japan's surrender, and therefore assert that the attack constituted a crime of war. In 1948 Truman defended his decision to use atomic bombs:

As President of the United States, I had the fateful responsibility of deciding whether or not to use this weapon for the first time. It was the hardest decision I ever had to make. But the President cannot duck hard problems—he cannot pass the buck. I made the decision after discussions with the ablest men in our Government, and after long and prayerful consideration. I decided that the bomb should be used to end the war quickly and save countless lives—Japanese as well as American. Truman continued to strongly defend himself in his memoirs in 1955–1956, stating many lives could have been lost had the United States invaded mainland Japan without the atomic bombs. In 1963, he stood by his decision, telling a journalist "it was done to save 125,000 youngsters on the U.S. side and 125,000 on the Japanese side from getting killed and that is what it did. It probably also saved a half million youngsters on both sides from being maimed for life."

Labor unions, strikes and economic issues

The end of World War II was followed by an uneasy transition from war to a peacetime economy. The costs of the war effort had been enormous, and Truman was intent on diminishing military services as quickly as possible to curtail the government's military expenditures. The effect of demobilization on the economy was unknown, proposals were met with skepticism and resistance, and fears existed that the nation would slide back into depression. In Roosevelt's final years, Congress began to reassert legislative power and Truman faced a congressional body where Republicans and conservative southern Democrats formed a powerful "conservative coalition" voting bloc. The New Deal had greatly strengthened labor unions and they formed a major base of support for Truman's Democratic Party. The Republicans, working with big business, made it their highest priority to weaken those unions. The unions had been promoted by the government during the war and tried to make their gains permanent through large-scale strikes in major industries. Meanwhile, price controls were slowly ending, and inflation was soaring. Truman's response to the widespread dissatisfaction was generally seen as ineffective.

When a national rail strike threatened in May 1946, Truman seized the railroads in an attempt to contain the issue, but two key railway unions struck anyway. The entire national railroad system was shut down, immobilizing 24,000 freight trains and 175,000 passenger trains a day. For two days, public anger mounted. His staff prepared a speech that Truman read to Congress calling for a new law, whereby railroad strikers would be drafted into the army. As he concluded his address, he was handed a note that the strike had been settled on presidential terms; nevertheless, a few hours later, the House voted to draft the strikers. The bill died in the Senate.

==== Approval rating falls; Republicans win Congress in 1946 ==== The president's approval rating dropped from 82 percent in the polls in January 1946 to 52 percent by June. This dissatisfaction led to large Democratic losses in the 1946 midterm elections, and Republicans took control of Congress for the first time since 1930. When Truman dropped to 32 percent in the polls, Democratic Arkansas Senator William Fulbright suggested that Truman resign; the president said he did not care what Senator "Halfbright" said. Truman cooperated closely with the Republican leaders on foreign policy but fought them bitterly on domestic issues. The power of the labor unions was significantly curtailed by the Taft–Hartley Act which was enacted over Truman's veto. Truman twice vetoed bills to lower income tax rates in 1947. Although the initial vetoes were sustained, Congress overrode his veto of a tax cut bill in 1948. In one notable instance of bipartisanship, Congress passed the Presidential Succession Act of 1947, which replaced the secretary of state with the Speaker of the House and the president pro tempore of the Senate as successor to the president after the vice president.