Interior shots of cable factory with machines winding cable under supervision of workman. Shot of General AGL McNaughton speaking to the camera. HA of gun factory with cluster of barrels being tempered in special vats. LA of women manning overhead crane. MCU of woman. Shot, in tank factory, of tanks being built. HA travelling shot, from overhead crane, of factory floor, incomplete tanks. HA PAN over large machine shop machining gun barrels. Various level shots of machine shaping gun barrels. Women figure prominently in labour force. Rear view of three field guns on a beach, of workers preparing to test them. Water to horizon can be seen in background. Profile MCS of woman welding. Similar shot of machinist working on machine tool. CU's of machine tool at work.