The development of the Sapper for war purposes from 1900 to W.W.11.
Black shirts walking the streets and giving fascist salutes, Mussolini making a speech. crowds around stacks of corn, some sort of ritual or celebration. Hitler and Mussolini. Big guns firing, buried below ground with just barrels showing. German under ground communications room. Long line of concrete tank defences. Theatre audience of soldiers applauding. Gracie Fields on stage. City on fire after air raid. Sappers removing large bomb buried in city street. Line of fires around lake. Unwinding detonation wire in dark. Barrage of guns firing at night. Sappers with mine sweepers clearing roads.
Long pontoon bridge. Making pontoon bridge. Hammering a sign "Grub Bridge". Vehicles crossing bridge. Jeeps travelling along rails. Tank converted to bull dozer. Tanks laying "instant" bridges and dropping bundles of trees to cross deep ditches. Short barrelled tank firing. Beach invasion under fire. Bulldozers on beach head during invasion. Drilling into concrete bunkers. Preparing a landing strip. Line of pontoons in the sea. Laying cables in water. Unrolling metal surface on sand. Long line of linked pontoons across open water making a harbour and access to shipping in deep water, aerial shots of the construction.
Repairing bombed railway lines. Freight train running. Making model map with installations from photo's. Printing maps. Tow boat pulling large barge. Rebuilding large bridge. River bridge making with diver. Floating pontoon with tank crossing river under own power. Bridge making using boats for floats. Parachute invasion, jumping from plane and sky full of parachutes.