Recent evidence has thrown light on the organization of Japanese antiaircraft
units about which little was previously known.
The organization of an AA regiment is believed to be as follows:
A battalion therefore consists of 12 guns and a regiment of 24 guns plus a
number of 20-mm AA/MGs. AA regiments are army troops, the battalion
normally being the tactical unit.
In the Southwest Pacific the Japanese appear to have frequently used
two-gun positions with AA/MGs sited near the guns. In Burma, however, four-gun
positions appear to have been more normal.