ADJ

armed, uniformed
The building is protected by armed guards
border, prison, security

VERB + GUARD

post
Guards had been posted all around the radio station

GUARD + VERB

patrol sth
Guards patrolled the perimeter fence
protect sth

GUARD + NOUN

duty
dog

ADJ

close
constant
armed
The accused was taken to court under armed guard
police

VERB + GUARD

keep, mount, stand
Soldiers stood guard on the city gates

PREP

off your ~
The question seemed to catch him off his guard
on (your) ~
Several police officers were on guard outside the factory. He was always on his guard against moneymaking schemes
under ~
The prisoners were under close guard
~ against, ~ over
Two police officers kept guard over the burnt-out building

ADJ

civil, national, palace, presidential
advance

VERB + GUARD

change
The guard was changed every two hours
call out
It would only be a matter of minutes before the alarm was raised and the guard called out

PHRASES

guard of honour
Fellow soldiers from Corporal Smith's regiment formed a guard of honour at his wedding