Operation Hailstone
Operation Hailstone load
General information
Date February 17 – 18, 1944
Theatre Pacific
Belligerents Naval Ensign of Japan.svg Japan vs USA Flag of the United States.svg
Game Type Objective
Style Naval/Air battle
Objectives Mogami
2 x 12.7 cm/40 Type 89 AA gun

Operation Hailstone (known in Japan as Japanese: トラック島空襲 Torakku-tō Kūshū, lit. "the airstrike on Truk Island") was a massive naval air and surface attack launched on February 17–18, 1944, during World War II by the United States Navy against the Japanese naval and air base at Truk in the Caroline Islands, a pre-war Japanese territory.