"battalion" - key terms from Wikipedia

armoured engineer battalion
artillery battalion
assault amphibian battalion
australian infantry battalion
aviation battalion
battalion
battalion	chief
battalion	group
brigade special troops battalion
brigade support battalion
british battalion
construction battalion
engineer battalion
field artillery battalion
fires battalion
frontier battalion
garibaldi battalion
hamlin battalion
hq battalion
infantry battalion
infantry training battalion
kree peace battalion
light armoured battalion
light infantry battalion
lincoln battalion
machine gun battalion
marine battalion
mechanized infantry battalion
military intelligence battalion
military police battalion
parachute battalion
parachute infantry battalion
patriot battalion
raider battalion
ranger battalion
reception battalion
recon battalion
reconnaissance battalion
sam battalion
self propelled field artillery battalion
signal battalion
south african infantry battalion
special operations battalion
special troops battalion
ss heavy panzer battalion
steel battalion
support battalion
tank battalion
tank infantry battalion
third battalion