Western Front, France.
World War One. Trench bombing; warfare; etc. Opens with some soldiers putting on gas masks that look like potato sacks or horror film villain. They tuck masks into their jackets; one man puts hat on top--pan along the soldiers. GV of countryside at the front; with long winding trench; some snow on the ground; no people visible. Bicycle rescue team find an injured man. GV looking from trench to fort in distance; hats of soldiers barely visible; catapult device leaning against trench wall. DS Soldier loading tin-can-shaped bomb into cannon. Soldier standing on step s into trench watching 2 others at rt.; pan to soldier holding up big gun (or mini cannon) mounted on frame. DS narrow curved trench; soldiers in gas masks in trench; mostly hidden from view; they are spraying something. continuation of bicycle brigade rescue team footage. One of the bicyclists lifts wounded soldier (bandaged head) they found in the field onto a makeshift seat between two bikes; another of them folds his bicycle into carrying position. They push the bikes along with the injured man between them.
Medicine; first aid.