when did japan start planning the attack on pearl harbor
Attack on Pearl Harbor Preliminary planning for an attack on Pearl Harbor to protect the move into the "Southern Resource Area" (the Japanese term for the Dutch East Indies and Southeast Asia generally) had begun very early in 1941 under the auspices of Admiral Isoroku Yamamoto, then commanding Japan's Combined Fleet.[38] He won assent to formal planning and training for an attack from the Imperial Japanese Navy General Staff only after much contention with Naval Headquarters, including a threat to resign his command.[39] Full-scale planning was underway by early spring 1941, primarily by Rear Admiral Ryūnosuke Kusaka, with assistance from Captain Minoru Genda and Yamamoto's Deputy Chief of Staff, Captain Kameto Kuroshima.[40] The planners studied the 1940 British air attack on the Italian fleet at Taranto intensively.[nb 7][nb 8]
Attack on Pearl Harbor Ninety minutes after it began, the attack was over. Two thousand and eight sailors were killed, and 710 others wounded; 218 soldiers and airmen (who were part of the Army until the independent U.S. Air Force was formed in 1947) were killed and 364 wounded; 109 marines were killed and 69 wounded; and 68 civilians were killed and 35 wounded. In total, 2,403 Americans died and 1,178 were wounded.[92][self-published source] Eighteen ships were sunk or run aground, including five battleships.[10][93] All of the Americans killed or wounded during the attack were non-combatants, given the fact there was no state of war when the attack occurred.[23][24][94]
Operation Cartwheel The campaign, which stretched into 1944, showed the effectiveness of a strategy of avoiding major concentrations of enemy forces and instead aiming to sever the Japanese lines of supply and communication.
Attack on Pearl Harbor The attack on Pearl Harbor was a surprise military strike by the Imperial Japanese Navy Air Service against the United States naval base at Pearl Harbor, Hawaii Territory, on the morning of December 7, 1941. The attack, also known as the Battle of Pearl Harbor,[11] led to the United States' entry into World War II. The Japanese military leadership referred to the attack as the Hawaii Operation and Operation AI,[12][13] and as Operation Z during its planning.[14]
Attack on Pearl Harbor The attack on Pearl Harbor was a surprise military strike by the Imperial Japanese Navy Air Service against the United States naval base at Pearl Harbor, Hawaii Territory, on the morning of December 7, 1941. The attack, also known as the Battle of Pearl Harbor,[8] led to the United States' entry into World War II. The Japanese military leadership referred to the attack as the Hawaii Operation and Operation AI,[9][10] and as Operation Z during its planning.[11]
Events leading to the attack on Pearl Harbor Planning for the attack on Pearl Harbor had begun in very early 1941, by Admiral Isoroku Yamamoto. He finally won assent from the Naval High Command by, among other things, threatening to resign. The attack was approved in the summer at an Imperial Conference and again at a second Conference in the fall. Simultaneously over the year, pilots were trained, and ships prepared for its execution. Authority for the attack was granted at the second Imperial Conference if a diplomatic result satisfactory to Japan was not reached. After final approval by