Battle of Midway

The Battle of Midway was fought from 4–7 June 1942 between the United States Navy and the Imperial Japanese Navy near Midway Atoll, a small American-held coral atoll roughly 1,300 miles northwest of Honolulu. It is widely regarded as the turning point of the Pacific War.

Admiral Isoroku Yamamoto designed the operation to lure the remaining U.S. carriers — which had escaped the attack on Pearl Harbor six months earlier — into a decisive engagement and to seize Midway as a forward base. The plan relied on surprise and a dispersed Japanese fleet built around four fleet carriers: Akagi, Kaga, Sōryū, and Hiryū, under Vice Admiral Chūichi Nagumo.

U.S. cryptanalysts at Station HYPO in Pearl Harbor, led by Commander Joseph Rochefort, had partially broken the Japanese naval code JN-25 and identified Midway as the target. Admiral Chester W. Nimitz, commanding the Pacific Fleet, positioned three carriers — Enterprise, Hornet, and the hastily repaired Yorktown — northeast of Midway under Rear Admirals Frank Jack Fletcher and Raymond Spruance.

On the morning of 4 June, dive bombers from Enterprise and Yorktown struck while Japanese flight decks were crowded with refueling and rearming aircraft. Within minutes Akagi, Kaga, and Sōryū were ablaze; Hiryū was sunk later that day after launching strikes that fatally damaged Yorktown. Japan lost all four carriers, around 250 aircraft, and many of its most experienced naval aviators. The United States lost Yorktown, the destroyer Hammann, and about 150 aircraft.

The battle ended Japan's strategic offensive in the central Pacific and shifted the initiative to the United States, setting conditions for the Guadalcanal campaign that began in August 1942. It is frequently cited in IR scholarship as a case study in signals intelligence, operational surprise, and the role of contingency in military outcomes.