assault helicopter company / troop

troop-carrier squadron / troop carrier squadron

attack helicopter troop

assault-troop transport

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

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

ambulance helicopter / medical evacuation (MEDEVAC) helicopter

medical evacuation (MEDEVAC) helicopter / ambulance helicopter

assault support helicopter battalion

helicopter amphibious assault ship

assault helicopter

all-helicopter assault

helicopter design company (bureau)

company tactical group / company tactical team

administrative company / administrative support company

air cavalry troop

armored cavalry troop

automated troop command and control system

cavalry troop

engineer troop unit

non-NATO troop contributing nation (NNTCN)

security in troop movement

separate cavalry troop

transportation and troop movement

troop

troop carrier

troop carrier aircraft

troop compartment

troop concentration

troop contributing nation (TCN)

troop exercises

troop headquarters section

troop information