The United States maintained its Constitutional Republic government structure throughout World War II. Certain expediencies were taken within the existing structure of the Federal government, such as conscription and other violations of civil liberties, including the internment and later dispersal of Japanese-Americans. Still, elections were held as scheduled in 1944.
The United States entered World War II with the Administration that had been at the helm of the nation since 1932, that of Franklin Delano Roosevelt. This administration had been preparing for war for a while by the time of the attack on Pearl Harbor on December 7, 1941.
President Franklin Delano Roosevelt and Vice President Henry A. Wallace won the election of 1940, and were at the helm of the nation as it prepared for and entered World War II. Roosevelt sought and won an unprecedented fourth term in office in 1944, but this time with Harry S. Truman as his Vice President. Roosevelt, who had been a victim of Guillain-Barré Syndrome early in life, died in April 1945, and Truman assumed the Presidency through the end of the war.
The Joint Chiefs were military officers, as opposed to the above, who were for the most part civilians.
In addition, the following offices reported to the Joint Chiefs of Staff:
The chief of naval operations (CNO) is the highest ranking officer of the United States Navy. The position is a statutory office held by an admiral who is a military adviser and deputy to the secretary of the Navy. In a separate capacity as a member of the Joint Chiefs of Staff, the CNO is a military adviser to the National Security Council, the Homeland Security Council, the secretary of defense, and the president.
Franklin Delano Roosevelt, commonly known by his initials FDR, was an American politician who served as the 32nd president of the United States from 1933 until his death in 1945. He directed the federal government during most of the Great Depression, implementing the New Deal in response to the most significant economic crisis in American history. He also built the New Deal coalition, realigning American politics into the Fifth Party System and defining American liberalism throughout the middle third of the 20th century. He was a member of the Democratic Party and is the only U.S. president to have served more than eight years in office; his third and fourth terms were dominated by World War II.
This section of the timeline of United States history concerns events from 1930 to 1949.
Frederick "Fred" Moore Vinson was an American attorney and politician who served as the 13th chief justice of the United States from 1946 until his death in 1953. Vinson was one of the few Americans to have served in all three branches of the U.S. government. Before becoming chief justice, Vinson served as a U.S. Representative from Kentucky from 1924 to 1928 and 1930 to 1938, as a federal appellate judge on the U.S. Court of Appeals for the District of Columbia Circuit from 1938 to 1943, and as the U.S. Secretary of the Treasury from 1945 to 1946.
Harold LeClair Ickes was an American administrator, politician and lawyer. He served as United States Secretary of the Interior for nearly 13 years from 1933 to 1946, the longest tenure of anyone to hold the office, and the second longest-serving Cabinet member in U.S. history after James Wilson. Ickes and Labor Secretary Frances Perkins were the only original members of the Roosevelt cabinet who remained in office for his entire presidency.
The United States Fleet was an organization in the United States Navy from 1922 until after World War II. The acronym CINCUS, pronounced "sink us", was used for the Commander in Chief, United States Fleet. This was replaced by COMINCH in December, 1941, under the Executive Order 8984, when it was redefined and given operational command over the Atlantic, Pacific, and Asiatic Fleets, as well as all naval coastal forces. The Executive Order 9096 authorized the offices of the CNO and COMINCH to be held by a single officer; Admiral Ernest J. King was first to do so, and in 1944 was promoted to the five-star rank of fleet admiral.
The National Defense Research Committee (NDRC) was an organization created "to coordinate, supervise, and conduct scientific research on the problems underlying the development, production, and use of mechanisms and devices of warfare" in the United States from June 27, 1940, until June 28, 1941. Most of its work was done with the strictest secrecy, and it began research of what would become some of the most important technology during World War II, including radar and the atomic bomb. It was superseded by the Office of Scientific Research and Development in 1941, and reduced to merely an advisory organization until it was eventually terminated during 1947.
The Wang Jingwei regime or the Wang Ching-wei regime is the common name of the Reorganized National Government of the Republic of China, the government of the puppet state of the Empire of Japan in eastern China called simply the Republic of China. This should not be confused with the contemporaneously existing National Government of the Republic of China under Chiang Kai-shek, which was fighting with the Allies of World War II against Japan during this period. The country was ruled as a dictatorship under Wang Jingwei, a very high-ranking former Kuomintang (KMT) official. The region that it would administer was initially seized by Japan throughout the late 1930s with the beginning of the Second Sino-Japanese War.
The Office of Administrator of Export Control was established in the United States by Presidential Proclamation 2413, July 2, 1940, to administer export licensing provisions of the act of July 2, 1940. Brigadier General Russell Lamont Maxwell, United States Army, headed up this military entity. It was abolished by Presidential Executive Order 8900, September 15, 1941, and its functions were transferred to the Economic Defense Board, which had been established by Presidential Executive Order 8839, July 30, 1941, to develop policies and programs to strengthen U.S. international economic relations. The name was changed to Board of Economic Warfare by Presidential Executive Order 8982, December 17, 1941. In turn, it was abolished by Executive Order 9361, July 15, 1943, and the functions were transferred to the newly created Office of Economic Warfare, OEM, which also assumed control of U.S. Commercial Company, Rubber Development Corporation, Petroleum Reserves Corporation, and Export-Import Bank of Washington from the Reconstruction Finance Corporation. Consolidated into the Foreign Economic Administration, 1943.
The military history of the United States during World War II covers the nation's role as one of the major Allies in their victory over the Axis Powers. The United States is generally considered to have entered the conflict with the 7 December 1941 surprise attack on Pearl Harbor by the Empire of Japan and exited it with the 2 September 1945 surrender of Japan. During the first two years of World War II, the US maintained formal neutrality, which was officially announced in the Quarantine Speech delivered by US President Franklin D. Roosevelt in 1937. While officially neutral, the US supplied Britain, the Soviet Union, and China with war materiel through the Lend-Lease Act signed into law on 11 March 1941, and deployed the US military to replace the British forces stationed in Iceland. Following the 4 September 1941 Greer incident involving a German submarine, Roosevelt publicly confirmed a "shoot on sight" order on 11 September, effectively declaring naval war on Germany and Italy in the Battle of the Atlantic. In the Pacific Theater, there was unofficial early US combat activity such as the Flying Tigers.
Malaya, then under British administration, was gradually occupied by Japanese forces between 8 December 1941 and the Allied surrender at Singapore on 15 February 1942. The Japanese remained in occupation until their surrender to the Allies in 1945. The first Japanese garrison in Malaya to lay down their arms was in Penang on 2 September 1945 aboard HMS Nelson.
The British Military Administration (BMA) was the interim administrator of British Malaya from August 1945, the end of World War II, to the establishment of the Malayan Union in April 1946. The BMA was under the direct command of the Supreme Allied Commander South East Asia, Lord Louis Mountbatten. The administration had the dual function of maintaining basic subsistence during the period of reoccupation, and also of imposing the state structure upon which post-war imperial power would rest.
The Allied leaders of World War II listed below comprise the important political and military figures who fought for or supported the Allies during World War II. Engaged in total war, they had to adapt to new types of modern warfare, on the military, psychological and economic fronts.
The Axis leaders of World War II were important political and military figures during World War II. The Axis was established with the signing of the Tripartite Pact in 1940 and pursued a strongly militarist and nationalist ideology; with a policy of anti-communism. During the early phase of the war, puppet governments were established in their occupied nations. When the war ended, many of them faced trial for war crimes. The chief leaders were Adolf Hitler of Nazi Germany, Benito Mussolini of Fascist Italy, and Hirohito of Imperial Japan. Unlike what happened with the Allies, there was never a joint meeting of the main Axis heads of government, although Mussolini and Hitler met on a regular basis.
During his two terms in office, President Harry S. Truman appointed four members of the Supreme Court of the United States: Chief Justice Fred M. Vinson, Associate Justice Harold Burton, Associate Justice Tom C. Clark, and Associate Justice Sherman Minton.
The United States Army Air Forces was the major land-based aerial warfare service component of the United States Army and de facto aerial warfare service branch of the United States during and immediately after World War II (1941–1947). It was created on 20 June 1941 as successor to the previous United States Army Air Corps and is the direct predecessor of the United States Air Force, today one of the six armed forces of the United States. The AAF was a component of the United States Army, which on 2 March 1942 was divided functionally by executive order into three autonomous forces: the Army Ground Forces, the United States Army Services of Supply, and the Army Air Forces. Each of these forces had a commanding general who reported directly to the Army Chief of Staff.
The following is a timeline of the first premiership of Winston Churchill, who was the Prime Minister of the United Kingdom from 1940 to 1945 and again from 1951 to 1955. Churchill served as the Prime Minister of the United Kingdom during the bulk of World War II. His speeches and radio broadcasts helped inspire British resistance, especially during the difficult days of 1940–41 when the British Commonwealth and Empire stood almost alone in its active opposition to Nazi Germany. He led Britain as Prime Minister until victory over Nazi Germany had been secured.
The presidency of Franklin D. Roosevelt began on March 4, 1933.
The third presidential term of Franklin D. Roosevelt began on January 20, 1941, when he was once again inaugurated as the 32nd president of the United States, and the fourth term of his presidency ended with his death on April 12, 1945. Roosevelt won a third term by defeating Republican nominee Wendell Willkie in the 1940 United States presidential election. He remains the only president to serve for more than two terms. Unlike his first two terms, Roosevelt's third and fourth terms were dominated by foreign policy concerns, as the United States became involved in World War II in December 1941.