German troops advance and rebuild bridges in Bromberg, Poland during World War II.

German invasion of Poland during World War II. German cavalry and infantry units advance across Bromberg, Poland. Soldiers on motorbikes advance. Soldiers crawl on the ground in a wooded area. Tanks roll across an area. German troops enter a city. German population welcome them. A man removes a Polish sign from a wall. Tanks and troops advance across an area. Damaged bridges across a river. German soldiers rebuild wrecked bridges. German soldiers in carts and tanks move across a bridge.