Sequence showing men of the "2nd Battalion HQ orderly regiment" in full combat dress practicing the setting up of wire entanglements on a battleground, remains of blasted building in background. Sequence showing men lying prone, firing short Lee Enfield 303 rifles with bayonets, then walk up to target to inspect results. MS of officer instructing men on use of small mortar. Shots of men being shown how to operate Lewis machine gun, including MS of two operator simulating change of magazines while firing. HAS of instuctor throwing smoke grenades into training trench (all shots same as NFB1910-FG-14-78).