The term "Kido Butai" refers to the mobile striking force of the Imperial Japanese Navy during World War II. It was primarily composed of aircraft carriers, battleships, cruisers, and destroyers, designed for rapid deployment and offensive operations. The Kido Butai played a crucial role in significant battles, including the attack on Pearl Harbor in December 1941. Kido Butai was known for its innovative use of carrier-based aircraft, which allowed for long-range strikes against enemy targets. This naval strategy emphasized mobility and surprise, making it a formidable force in the Pacific Theater. The effectiveness of Kido Butai diminished after key battles, such as the Battle of Midway in 1942, leading to its eventual decline.