Portrait of Members of the London Branch Civil War Veterans Probably Taken in London, England (1910′s)

Portrait of members of the London Branch Civil War Veterans probably taken in London, England, c. 1910′s. From the book Souvenir of Abraham Lincoln published in 1920.

Map of French Forts Surrounding Paris Published Near The Start of World War 1 in September 1914

Map of French forts surrounding Paris published near the start of World War 1 in September 1914. From The Illustrated War News magazine published in 1914.

Propaganda Composite Photo Postcard Showing a Smiling German Who Has Captured Three Allied Soldiers and Put Them in Chains Which Was Published During the Early Months of World War 1 (1914)

Propaganda composite photo postcard showing a smiling German who has captured three Allied soldiers (British, Russian, and French) and put them in chains which was published during the early months of World War 1 in 1914. From The Illustrated War News magazine published in 1914.

“German Winter Watch in the Vosges. Firing a Heavy Howitzer.“ German Soldiers in the Vosges Mountains of France During World War 1 (1910's)

“German winter watch in the Vosges. Firing a heavy howitzer.“ German soldiers in the Vosges Mountains of France during World War 1.

Source: National Archives and Records Administration.

German Sailors Drilling With the Deck Gun of a U-boat Docked in a Port During World War 1 (1910's)

German sailors drilling with the deck gun of a U-boat docked in a port during World War 1.

Source: National Archives and Records Administration.

“Captain Franz Von Papen, Former German Military Attache at Washington, Who Was Persona Non Grata to the U.S. on Account of His Unfriendly Activities" (1915)

“Captain Franz von Papen, former German military attache at Washington, who was persona non grata to the U.S. on account of his unfriendly activities. He was recalled December 1915.”

Source: National Archives and Records Administration.

French Soldier Raoul Berthelé Playing With His Dog Named Goli in Berzy-le-Sec, France (1915)

French soldier Raoul Berthelé playing with his dog named Goli in Berzy-le-Sec, France, 1915. Attributed to Raoul Berthelé.

Source: City Archives of Toulouse.

A French Soldier Posing at the Entrance of an Aid Station in a Trench During World War 1

A French soldier posing at the entrance of an aid station in a trench during World War 1. By Raoul Berthelé.

Source: City Archives of Toulouse.

Portrait of Three French Soldiers Posing in a Bunk Room in a Dugout or Barracks Building Probably Somewhere in Northeastern France During World War 1

Portrait of three French soldiers posing in a bunk room in a dugout or barracks building probably somewhere in northeastern France during World War 1. By Raoul Berthelé.

Source: City Archives of Toulouse.

Scene of a Group Having Fun on a Beach Probably Somewhere in France (1900′s/1910′s)

Scene of a group having fun on a beach probably somewhere in France, c. 1900′s/1910′s. By Raoul Berthelé.

Source: City Archives of Toulouse.

French Soldier Raoul Berthelé Posing With a Row of Captured German Artillery Pieces in Mercin-et-Vaux, France (1918)

French soldier Raoul Berthelé posing with a row of captured German artillery pieces in Mercin-et-Vaux, France, 1918. Attributed to Raoul Berthelé.

Source: City Archives of Toulouse.

A Group of Italian POWs in a Prison Camp During World War 1

A group of Italian POWs in a prison camp during World War 1, location unknown.

Source: Royal Library, Denmark.

View Possibly Showing Dead, Dying, or Pinned Down Soldiers in No Man’s Land During World War 1 (1910's)

View possibly showing dead, dying, or pinned down soldiers in no man’s land during World War 1, location unknown.

SourceSan Diego Air and Space Museum.

View of a Mock Charge by Ottoman Lancers in Palestine During World War 1 (1917)

View of a mock charge by Ottoman lancers in Palestine during World War 1, 1917. Attributed to the American Colony in Jerusalem.

Source: Library of Congress.

Portrait of Three French Soldiers in Saleux, France, During World War 1 (1915)

Portrait of three French soldiers in Saleux, France, during World War 1, 1915. By Raoul Berthelé.

Source: City Archives of Toulouse.

Panoramic View of German Soldiers During a Mock Battle Shortly Before the Start of World War 1 (1910's)

Panoramic view of German soldiers during a mock battle shortly before the start of World War 1, c. 1914. Published in a 1914 compilation book of Illustrated War News.

German Soldiers in a Truck Headed to the Front in Somme, France, During World War 1 (1910's)

German soldiers in a truck headed to the front in Somme, France, during World War 1.

Source.

French Soldiers Posing Behind a Trench Filled With the Bodies of Dead German Soldiers Killed by Artillery Fire During World War 1

French soldiers posing behind a trench filled with the bodies of dead German soldiers killed by artillery fire during World War 1, location unknown, c. 1918.

Source.

Animated Stereoscopic Portrait of Emilienne Gosse and Raoul Berthelé in Fublaines, France (1918)

Animated stereoscopic portrait of Emilienne Gosse and Raoul Berthelé in Fublaines, France, September 4, 1918. Attributed to Raoul Berthelé.

Source.

Italian Soldiers and Civilians Watching an Aerial Dogfight Between Italian and Austro-Hungarian Planes Somewhere on the Italian Front During World War 1 (1910's)

Italian soldiers and civilians watching an aerial dogfight between Italian and Austro-Hungarian planes somewhere on the Italian Front during World War 1. Published by the Keystone View Company.

Source.