A Swedish volunteer, somewhere in Northern Finland, protects himself from the sub-zero arctic cold with a mask over his face on February 20, 1940,

A Swedish volunteer, somewhere in Northern Finland, protects himself from the sub-zero arctic cold with a mask over his face on February 20, 1940, while on duty against the Russian Invaders.

German paratroopers with R75 motorcycle, Italy, 1943-1944; note MG 42 machine gun mounted on the side car

German paratroopers with R75 motorcycle, Italy, 1943-1944; note MG 42 machine gun mounted on the side car

German soldier loading a shell into an 8.8 cm FlaK gun, France, 1944.

German soldier loading a shell into an 8.8 cm FlaK gun, France, 1944.

An Australian soldier with a captured German MG 34 machine gun, 25 July 1942

An Australian soldier with a captured German MG 34 machine gun, 25 July 1942

Panzergrenadiers of the 2nd SS Panzer Division 'Das Reich' advance during the Battle of Kursk, 1943.

Panzergrenadiers of the 2nd SS Panzer Division 'Das Reich' advance during the Battle of Kursk, 1943.

Japanese soldiers with Type 92 heavy machine guns. 1941-42

Japanese soldiers with Type 92 heavy machine guns. 1941-42

Germans fighting in Osterbeek, Netherlands against the British 1st Airborne Division, Operation Market-Garden, 1944.

Germans fighting in Osterbeek, Netherlands against the British 1st Airborne Division, Operation Market-Garden, 1944.