WW2 Visual Archive on Instagram: "IJN Kaga — Japan’s Pearl Harbor Carrier Lost at Midway WW2 Documentary IJN Kaga was an Imperial Japanese Navy aircraft carrier that became one of the core strike carriers of Japan’s early‑war carrier force, built from a battleship hull conversion under treaty-era constraints and later rebuilt into a full fleet carrier configuration. ​ In the opening phase of the Pacific War, Kaga operated as part of Japan’s fast carrier striking arm and took part in the attack o