Map of a Russian Redoubt at the Start of World War 1 (1914)

Map of a Russian redoubt at the start of World War 1. From The Illustrated War News magazine published in 1914.

Russian POWs Hauling Their Machine Guns Along a Road in Galicia Under the Guard of German Soldiers During World War 1

Russian POWs hauling their machine guns along a road in Galicia under the guard of German soldiers during World War 1.

Source.

View of the Interior of an Armored Train Car Used During the Mexican Revolution (1910′s)

View of the interior of an armored train car used during the Mexican Revolution, c. 1910′s. From the book Mexico and the United States; A Story of Revolution, Intervention and War.

An American Machine Gun Company on the Front Line Somewhere on the Western Front Around the Time of the Armistice During World War 1 (1918)

An American machine gun company on the front line somewhere on the Western Front around the time of the Armistice during World War 1, November 1918. From the Official History of the 315th Infantry.

American Soldiers of the 79th Infantry Division Posing With Captured German POWs and Machine Guns During World War 1

American soldiers of the 79th Infantry Division posing with captured German POWs and machine guns during World War 1. From the Official History of the 315th Infantry.

Two German Patrol Boats on Lake Ladoga on the Eastern Front (1942)

Two German patrol boats on Lake Ladoga on the Eastern Front, August 13, 1942.

Source.