Kammala wannan jumla: A ƙarshen 1944, 2nd, 5th, 8th, da 16th Antiaircraft Artillery (tsohon Tsaro) Battalions sun kafa 1st Provisional Antiaircraft Artillery Group a shirye-shiryen mamaye tsibirin Japan. Duk da cewa ba su shiga cikin yakin Iwo Jima ba, sun sauka a Okinawa a watan Afrilu 1945. Ba da daɗewa ba,
Jafananci sun mika wuya ya haifar da rushewar mafi yawan battalions na tsaro.