avoided Kugayama after the incident and as a result the guns had no subsequent chance to fire. Effectiveness A postwar American report evaluated the effectiveness of Japanese anti-aircraft fire. The report demonstrated that the Type 5 15 cm AA gun was more than five times more effective than the Type 3 12 cm AA gun, and that the engagement envelope was considerably larger. The guns were deployed with a dedicated Type 2 electronic fire control system, with an above ground optical tracker and a targeting computer installed in a nearby bunker, this was linked electronically to the gun's fire control director, allowing precise target tracking. References Bishop, Chris (eds) The Encyclopedia of Weapons of World War II. Barnes & Nobel. 1998. Chant, Chris. Artillery of World War II, Zenith Press, 2001, McLean, Donald B. Japanese Artillery; Weapons and Tactics. Wickenburg, Ariz.: Normount Technical Publications 1973. . Mayer, S.L. The Rise and Fall of Imperial Japan. The Military Press (1884) US Department of War, TM 30-480, Handbook on Japanese Military Forces, Louisiana State University Press, 1994. War Department TM-E-30-480 Handbook on Japanese Military Forces September 1944 Notes External links Taki's Imperial Japanese Army REPORTS OF THE U. S. NAVAL TECHNICAL MISSION TO JAPAN Artillery of Japan World War II anti-aircraft guns 5 5 150 mm artillery Weapons and ammunition introduced in 1945