A declaration of war is a formal declaration issued by a national government indicating that a state of war exists between that nation and another. A document by the Federation of American Scientists gives an extensive listing and summary of statutes which are automatically engaged upon the United States declaring war.
The First Washington Conference, also known as the Arcadia Conference, was held in Washington, D.C., from December 22, 1941, to January 14, 1942. President Roosevelt of the United States and Prime Minister Churchill of the United Kingdom attended the conference, where they discussed a future United Nations, and representative of the Allies adopted the United Nations Declaration.
The 76th United States Congress was a meeting of the legislative branch of the United States federal government, composed of the United States Senate and the United States House of Representatives. It met in Washington, D.C., from January 3, 1939, to January 3, 1941, during the seventh and eighth years of Franklin D. Roosevelt's presidency. The apportionment of seats in the House of Representatives was based on the 1930 United States census.
The Allies, formally referred to as the United Nations from 1942, were an international military coalition formed during World War II (1939–1945) to oppose the Axis powers. Its principal members by the end of 1941 were the "Big Four" – the United Kingdom, United States, Soviet Union, and China.
The following events occurred in December 1941:
The government of the United Kingdom declared war on the Empire of Japan on 8 December 1941, following the Japanese attacks on British Malaya, Singapore, and Hong Kong on the previous day as well as in response to the bombing of the US fleet at Pearl Harbor.
Japan's attack on Pearl Harbor took place on December 7, 1941. The United States military suffered 19 ships damaged or sunk, and 2,403 people were killed. Its most significant consequence was the entrance of the United States into World War II. The US had previously been officially neutral but subsequently entered the Pacific War, and after Italy's declaration of war and Germany's declaration of war shortly after the attack, the Battle of the Atlantic and the European theatre of war. Following the attack, the US interned 120,000 Japanese Americans, 11,000 German Americans, and 3,000 Italian Americans.
The Imperial edict of declaration of war by the Empire of Japan on the United States and the British Empire was published on 8 December 1941, 7.5 hours after Japanese forces started an attack on the United States naval base at Pearl Harbor and attacks on British forces in Malaya, Singapore, and Hong Kong. The declaration of war was printed on the front page of all Japanese newspapers' evening editions on December 8. The document was subsequently printed again on the eighth day of each month throughout the war, to re-affirm the resolve for the war.
An Act Declaring War between the United Kingdom of Great Britain and Ireland and the Dependencies Thereof and the United States of America and Their Territories was passed by the 12th United States Congress on June 18, 1812, thereby beginning the War of 1812. It was signed by James Madison, the 4th President of the United States.
On 25 April 1898, the United States Congress declared war upon Spain. The ensuing Spanish–American War resulted in a decisive victory for the United States, and arguably served as a transitional period for both nations. Spain saw its days of empire fade, as the United States saw the prospect of overseas empire emerge. The war was ended by the Treaty of Paris signed on December 10 that same year.
On April 2, 1917, President Woodrow Wilson asked a special joint session of the United States Congress for a declaration of war against the German Empire. Congress responded with the declaration on April 6.
On December 11, 1941, the United States Congress declared war on Germany, hours after Germany declared war on the United States after the attack on Pearl Harbor by the Empire of Japan. The vote was approved unanimously by both houses of Congress; 88–0 in the Senate and 393–0 in the House.
On December 8, 1941, at 12:30 PM ET the United States Congress declared war, on the Empire of Japan in response to its surprise attack on Pearl Harbor and subsequent declaration of war the prior day. The Joint Resolution Declaring that a state of war exists between the Imperial Government of Japan and the Government and the people of the United States and making provisions to prosecute the same was formulated an hour after the Infamy Speech of President Franklin D. Roosevelt. Following the U.S. declaration, Japan's allies, Germany and Italy, declared war on the United States, bringing the United States fully into World War II. The Japanese government had originally intended to deliver their own declaration of war thirty minutes before the attack, but the Japanese embassy in Washington took too long to decode the 5,000-word document.
On June 5, 1942, the United States declared war on Bulgaria. Bulgaria was neutral during 1939–1941, but on March 1, 1941, Bulgaria signed the Tripartite Pact and officially joined the Axis bloc. Following this, the Bulgarian government declared war on the United Kingdom and the United States on December 13, 1941. On June 4, 1942 the United States Congress passed joint resolutions declaring war on Bulgaria along with Hungary and Romania. President Roosevelt approved all three declarations the following day.
A declaration of war by Canada is a formal declaration issued by the Government of Canada indicating that a state of war exists between Canada and another nation. It is an exercise of the royal prerogative on the constitutional advice of the ministers of the Crown in Cabinet and does not require the direct approval of the Parliament of Canada, though such can be sought by the government. Since gaining the authority to declare war as a consequence of the Statute of Westminster, 1931, Canada has done so only during the Second World War.
On 11 December 1941, four days after the Japanese attack on Pearl Harbor and the United States declaration of war against Imperial Japan, Nazi Germany declared war against the United States, in response to what was claimed to be a "series of provocations" by the United States government when the U.S. was still officially neutral during World War II. The decision to declare war was made by Adolf Hitler, following two days of consultation. It has been referred to as Hitler's "most puzzling" decision of World War II. Publicly, the formal declaration was made to American Chargé d'Affaires Leland B. Morris by German Foreign Minister Joachim von Ribbentrop in the latter's office. Later that day, the U.S. declared war on Germany, with Germany's action having eliminated any remaining meaningful domestic isolationist opposition to the U.S. joining the European war.
On 3 September 1939, the United Kingdom declared war on Germany—two days after the German invasion of Poland. France also declared war on Germany later the same day.
On December 11, 1941, Italy declared war on the United States in response to the latter's declaration of war upon the Empire of Japan following the attack on Pearl Harbor four days earlier, and also due to its alliance with Germany. Germany also declared war on the U.S. the same day. The US immediately responded by declaring war on Germany and Italy, thus thrusting the United States in fighting two major fronts across the Pacific and Atlantic Oceans in World War II.
The 1917 United States declaration of war on Austria-Hungary, officially House Joint Resolution 169, was a resolution adopted by the United States Congress declaring that a state of war existed between the United States of America and the Austro-Hungarian Empire. It occurred eight months after the earlier declaration of war against Germany that had brought the United States into World War I. Enacted on December 7, 1917 and coming into effect the same day, it was officially terminated in 1921, three years after the effective capitulation of Austria-Hungary.
The Republic of Cuba had maintained neutrality during much of World War I until German submarine warfare resumed on February 1, 1917. On April 7, one day after the United States entered the war, Cuba declared war on Germany and began to support the Allied war effort. Cuba also declared war on Austria-Hungary later that year, on December 16.
