Joint Army Air headquarters

headquarters and headquarters battery / company / detachment / troop (HHB / HHC / HHD/ HHT)

headquarters and headquarters battalion (HHBN)

Army Ordnance Headquarters

Joint Headquarters (JHQ)

Army Fuels and Lubricants Working Party (ARMY F&LWP)

Queen's Regulations for the Army and the Royal Army Reserve

Army Joint Fires Observer (JFO) Sustainment Program

JAN grid / Joint Army-Navy grid

Joint Army and Navy Board

Joint Army and Navy Planning Committee

Joint Army-Navy (JAN)

Joint Army-Navy grid system

Joint Army-Navy specifications / JAN specifications

Allied Joint Doctrine for Joint Targeting (AJP-3.9)

Joint Information Operations Center /Joint Intelligence Operations Center (JIOC)

U-joint (universal joint / universal coupling)

army air defense command

division army air defense command post

US Army Air Defense Command

guards air assault army / division / brigade

army air photograph interpretation unit

Navy, Army and Air Force Institutes (NAAFI / N.A.A.F.I. /ˈnæfiː/)

commander of an air army subordinate to the front

aerial refueling / air refueling / in-flight refueling (IFR) / air-to-air refueling (AAR)

air combat capable helicopter / air-to-air capable helicopter

air support field pack, field pack air support, airborne / para (air support) / Pathfinder Bergen

active component headquarters

battery headquarters

combined headquarters/staff

command headquarters

company headquarters

Corps Support Command Headquarters (COSCOM HQ)