TE Field engineering. Fortifications. Defence works
TE Armaments. Ordnance. Arms. Weapons. Guns. Artillery. Small arms. Side arms. Armoured and other service vehicles. Ammunition and war gases. Guided missiles and rockets
TE Ballistics. Gunnery. Theoretical and experimental problems
TE Field engineering equipment and operations. Lines of communication. Radar countermeasures. Military topography
TE Military and naval aviation. Air defence