Executive Order 9066 was a United States presidential executive order signed and issued during World War II by United States president Franklin D. Roosevelt on February 19, 1942. "This order authorized the forced removal of all persons deemed a threat to national security from the West Coast to "relocation centers" further inland—resulting in the incarceration of Japanese Americans." Two-thirds of the 125,000 people displaced were U.S. citizens.
Fu-Go was an incendiary balloon weapon deployed by Japan against the United States during World War II. It consisted of a hydrogen-filled paper balloon 33 feet (10 m) in diameter, with a payload of four 11-pound (5.0 kg) incendiary devices and one 33-pound (15 kg) high-explosive anti-personnel bomb. The uncontrolled balloons were carried over the Pacific Ocean from Japan to North America by fast, high-altitude air currents, today known as the jet stream, and used a sophisticated sandbag ballast system to maintain their altitude. The bombs were intended to ignite large-scale forest fires and spread panic.
The attack on Pearl Harbor was a surprise military strike by the Imperial Japanese Navy Air Service on the American naval base at Pearl Harbor in Honolulu, Hawaii, in the United States, just before 8:00 a.m. on Sunday, December 7, 1941. At the time, the United States was a neutral country in the World War II conflict. The attack on Hawaii and other U.S. territories led the United States to formally enter World War II on the side of the Allies the day following the attack, on December 8, 1941. The Japanese military leadership referred to the attack as the Hawaii Operation and Operation AI, and as Operation Z during its planning.
This section of the timeline of United States history concerns events from 1930 to 1949.
The "Day of Infamy" speech, sometimes referred to as the Infamy speech, was a speech delivered by Franklin D. Roosevelt, the 32nd president of the United States, to a joint session of Congress on December 8, 1941. The previous day, the Empire of Japan attacked United States military bases at Pearl Harbor and the Philippines, and declared war on the United States and the British Empire. The speech is known for its famed first line, which opened with Roosevelt saying, "Yesterday, December 7, 1941—a date which will live in infamy..."
The Battle of Los Angeles, also known as the Great Los Angeles Air Raid, is the name given by contemporary sources to a rumored attack on the continental United States by Imperial Japan and the subsequent anti-aircraft artillery barrage which took place from late 24 February to early 25 February 1942, over Los Angeles, California. The incident occurred less than three months after the U.S. entered World War II in response to the Imperial Japanese Navy's surprise attack on Pearl Harbor, and one day after the bombardment of Ellwood near Santa Barbara on 23 February. Initially, the target of the aerial barrage was thought to be an attacking force from Japan, but speaking at a press conference shortly afterward, Secretary of the Navy Frank Knox called the purported attack a "false alarm". Newspapers of the time published a number of reports and speculations of a cover-up to conceal an actual invasion by enemy airplanes.
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.
During World War II, Allied forces conducted air raids on Japan from 1942 to 1945, causing extensive destruction to the country's cities and killing between 241,000 and 900,000 people. During the first years of the Pacific War these attacks were limited to the Doolittle Raid in April 1942 and small-scale raids on military positions in the Kuril Islands from mid-1943. Strategic bombing raids began in June 1944 and continued until the end of the war in August 1945. Allied naval and land-based tactical air units also attacked Japan during 1945.
The Bombing of Hamamatsu in World War II was part of the strategic bombing campaign waged by the United States of America against military and civilian targets and population centers of the Empire of Japan during the Japan home islands campaign in the closing states of World War II.
The Bombing of Numazu in World War II was part of the strategic bombing campaign waged by the United States against military and civilian targets and population centers during the Japan home islands campaign in the closing stages of World War II.
The Bombing of Hiratsuka in World War II was part of the strategic bombing campaign waged by the United States against military and civilian targets and population centers during the Japan home islands campaign in the closing states of World War II.
The Bombing of Chiba in World War II was part of the strategic bombing campaign waged by the United States of America against military and civilian targets and population centers during the Japan home islands campaign in the closing stages of World War II, and included two separate air raids in 1945. The second, and larger, air raid of July 6, 1945 is also referred to as the “Tanabata Air Raid”, as it occurred on the night of a traditional festival.
The city of Bangkok, Thailand was bombed by the Allies on numerous occasions during World War II. It was also the target for the first combat mission by Boeing B-29 Superfortresses in June 1944.
The Bombing of Kōfu in World War II was part of the strategic bombing campaign waged by the United States against military and civilian targets and population centers of the Empire of Japan during the Japan home islands campaign in the closing states of World War II.
The bombing of Yokkaichi in World War II on June 18, 1945, was part of the strategic bombing campaign waged by the United States against military and civilian targets and population centers during the Japan home islands campaign in the closing stages of World War II.
I-23 was a Type B1 submarine of the Imperial Japanese Navy during World War II. After a raid on the West Coast of California she participated in an attempt at a second attack upon Pearl Harbor. After surviving an American air attack on Kwajalein I-23 was lost in early 1942 with all hands somewhere off the Oahu coast of Hawaii.
Japan participated in World War II from 1939 to 1945 as a member of the Axis and encapsulates a significant period in the history of the Empire of Japan, marked by significant military campaigns and geopolitical maneuvers across the Asia-Pacific region. Spanning from the early 1930s to 1945, this tumultuous era witnessed Japan's expansionist policies and aggressive military actions, including the invasion of the Republic of China, the annexation of French Indochina, and the subsequent incursion into British India. The Pacific War, a major theater of World War II, further intensified Japan's engagements, leading to significant confrontations with Allied forces in the Pacific Ocean. Ultimately, the conflict culminated in the Surrender of Japan, a momentous event that marked the end of hostilities and reshaped the global landscape.
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.
The Bombing of Gifu in World War II on July 9, 1945 was part of the strategic bombing campaign waged by the United States of America against military and civilian targets and population centers during the Japan home islands campaign in the closing stages of World War II.
California during World War II was a major contributor to the World War II effort. California's long Pacific Ocean coastline provided the support needed for the Pacific War. California also supported the war in Europe. After the Japanese attack on Pearl Harbor on December 7, 1941, most of California's manufacturing was shifted to the war effort. California became a major ship builder and aircraft manufacturer. Existing military installations were enlarged and many new ones were built. California trained many of the troops before their oversea deployment. Over 800,000 Californians served in the United States Armed Forces. California agriculture, ranches and farms were used to feed the troops around the world. California's long coastline also put the state in fear, as an attack on California seemed likely. California was used for the temporary and permanent internment camps for Japanese Americans. The population grew significantly, largely due to servicemen who were stationed at the new military bases/training facilities and the mass influx of workers from around the U.S. in the growing defense industries. With all the new economy activity, California was lifted out of the Great Depression. Over 500,000 people moved to California from other states to work in the growing economy. California expanded its oil and mineral production to keep up with the war demand.
