German troops fire artillery at a Polish harbor and smoke rises due to bombardment in Gdynia, Poland during World War II.

A film about the Invasion of Poland in 1939 by German Army during World War II. A polish harbor in Gdynia. The poles of sunk ships are laid at the harbor to block the entrance of German warships. The German troops fire an artillery across the harbor. Smoke rises at the harbor due to an explosion. A soldier fires a gun. A German warship at the harbor. The troops fire guns on a deck. Smoke rises due to bombardment. A troop fires a gun in the foreground. A puff of smoke is formed.