Armored columns assemble for the assault. A building in Danzig is shelled, sprayed with gasoline, and burned. Machine gunners advance on motorcycles; tanks advance. A town is burned and occupied; a bridge over the Vistula is repaired. Troops rest in transit and clean weapons. A ship shells Gdynia. Aerial photographs are made and studied. Reel 2, planes are readied for a mission. Bombers and Stukas hit targets. Artillery and infantry attack Warsaw. The city is taken; prisoners and captured weapons are assembled. Troops parade in Warsaw.