Some more common Brit army slang:
Weapon: "Shooter"
Food: "Scoff"
Rucksack: "Bergen"
Sleeping Bag: "Dossbag,Maggot"
Cigarrettes: "Binds,Snouts,"
Quickly: "Fidi-Fidi"
Canteen: "NAAFI, Choggy" NAAFI can also be applied to a poor soldier ie;" No Ambition And F***all Interest."
Man: "Wallah"...