Iron ore being offloaded from a ship, in large steel buckets, on to a flat car, at a port. A large crane dumping ore into a large open railroad container car, during World War 1. Coke being discharged after being processing from coal, at a steel plant. A traveling crane conveying a large container of raw material to the top of a furnace at a steel plant. Fire emitted from a crucible at a steel plant. An ingot being forged. Sequence shifts to views inside an Italian heavy artillery factory, where an annealing wrap is being lowered around a large gun barrel and heated with a gas fire. Huge gun barrels seen on machining floor. Machinists turning gun barrels on very large lathes. View through a gun barrel showing its spiral rifling. Machinists in a crowded shop where all machines are driven by leather belts. More views of gun barrels being turned on lathes. A man seated at the controls of a huge milling machine that revolves around the work piece, fastened to the machine bed.
Polish troops in the European Theater during World War I. Carts drawn by mules and loaded with supplies move across a field. Polish troops carrying rifles march along the field. The soldiers fire artillery. Smoke rises from the firing. The soldiers advance and fire the rifles. Soldiers aboard a truck passing across a field. Officers and soldiers standing outside a building discuss. Russian prisoners of war.
Japanese soldiers maneuver in Japan during World War I. Troops seated on the ground. They hold and fire rifles. Officers watch the troops. An officer discusses with other officer. Soldiers fire artillery. Smoke rises from the firing. Trees in the background. Civilians seated behind a roped off area watch the maneuvers.
Cleaning of the Panama Canal. A ship underway in the canal. A crane working in the canal. Debris is removed from the canal.
Italian soldiers at the Carso front in Italy during World War I. Soldiers seated in a field. Several soldiers carrying rifles march across the field.
Cleaning operations in the European Theater. A crane in operation. Men standing nearby and working. Mud is removed from land.