German soldiers manning a 37-mm anti-tank gun on a street in the Soviet city of Kharkov, ready for enemy armor.

Anti-tank gun in street fighting

German soldiers pose with an artillery piece and ammunition. Most likely a training activity. No information available as to time and place.

Private photo

Invasion of Poland, Sept 1939: Railroad artillery ready to open fire; 150 mm guns in the foreground coupled by 170 mm in the background. These guns were usually deployed in 3-gun batteries; their primary advantage was their fast movement from point to point, which compensated in part for the restriction of being able to move only along railroad routes. 
