under a deadly fire

deadly fire

open deadly fire

deadly force

lethal force (deadly force)

non-deadly force

deadly radioactive damage area

deadly concentration

deadly peril

deadly weapon

slant fire; diagonal fire; oblique fire; fire to the oblique

under fire

bring under fire

hold under fire

keep under fire

take under fire

fire control orders (FCO) ('Hold Fire', 'Cease Fire' and 'Engage')

foot march under packs

hand-held under-barrel grenade launcher

restricted area (under military jurisdiction)

surveillance, under surveillance

under armor auxiliary power unit (UAAPU)

under arms

under barrel grenade launcher (UBGL)

under canvas

under command of

under cover of

under hatches

Under Secretary of Defense (USD)

Under Secretary of Defense for Acquisition, Technology, and Logistics (USD AT&L)

Under Secretary of Defense for Intelligence USD(I)

under-strength unit

under-vehicle improvised explosive device (UVIED)