ADJ

great, huge, large, mighty, powerful
small
professional, regular, standing
reserve
conscript
volunteer
disciplined
modern
allied
enemy
opposing
foreign
national
private
guerrilla
rebel
advancing, invading, occupying, victorious
defeated, retreating

VERB + ARMY

have
go into, join
After leaving school Mike went into the army
leave
be in command of, command, lead
He was in command of the British Army in Egypt. He led the army into battle
drill, train
amass, build up, raise, recruit
The king was unable to raise an army
equip, supply
mobilize
deploy, field
The French army was deployed in the Western Desert
concentrate
crush, decimate, defeat, put to flight, rout
The army was finally defeated in the autumn
demobilize, disband
The emperor was deposed and his army disbanded

ARMY + VERB

gather
advance, march
A huge army marched on London
camp
go into action, invade
attack, clash, fight
The two opposing armies clashed in battle
occupy
flee, pull back, retreat, withdraw

ARMY + NOUN

captain, chief, commander, general, officer
corps, personnel, unit
barracks, base, camp, headquarters
career
patrol
greatcoat, uniform
wife

PREP

in the ~
Her husband is in the army

ADJ

vast
a vast army of personnel
small
a small army of volunteers
growing, increasing
reserve

PREP

of
He argued that unemployment created a useful reserve army of labour