- evolution
- excursion
- extension
- eye
- facing
- expendable
- extend
- face
- fall
- fatigue
- fatigue clothes
- fatigue duty
- fatigue-dress
- fatigue-party
- feel
- feint
- field hospital
- field marshal
- field work
- field-battery
- file
- feeler
- feet
- field-day
- field-officer
- field-strip
- fighter pilot
- fighting plane
- fighter bomber
- flame-projector
- flamer-thrower
- flank
- flanker
- flare
- flare-bomb
- flash
- foot
- force
- forced march
- foreign legion
- fluid
- flying saucer
- forlorn hope
- form
- formation
- fortification
- forward
- foss
- fosse
- four-pounder
- foxhole
- frag bomb
- fragmentation bomb
- front
- frontage
- frontless
- fugleman
- gap
- full general
- galloper
- gallery
- garrison
- gas
- garand rifle
- general
- generalship
- glacis
- general headquarters
- glory-hole
- generalissimo
- gi
- globe-lightning
- go without
- good
- grannie
- granny
- grape-shot
- grasshopper
- gratuity
- grenade
- ground forces
- guardhouse
- gun-apron
- h-hour
- grenadier
- ground
- guard
- guard-boat
- guardroom
- gyrene
- half-track
- hammering
- hand-grenade
- headquarters
- heavy
- heavy-armed
- hedge defense
- hedgehog
- held
- hired