DGA3952822: Italian footbridge disguised on Piave River, 1918, World War I, Italy, 20th century / Bridgeman Images

DGA3952826: Pigeon coop, World War I, Italy, 20th century / Bridgeman Images

DGA3952834: Ambulances in wounded triage on Karst, World War I, Italy, 20th century / Bridgeman Images

DGA3952837: Italian cable car on Mount Grappa, World War I, Italy, 20th century / Bridgeman Images

DGA3952844: Italian reinforcement troops World War I, Italy, 20th Century / Bridgeman Images

DGA3952849: Italian post on Roccolo Beltracchi at Monticelli Pass, World War I, Italy, 20th century / Bridgeman Images

DGA3952866: Italian troops crossing Livenza River on boat bridge, October 1918, World War I, Italy, 20th century / Bridgeman Images

DGA3952871: Italian soldiers on Asiago plateau, World War I, Italy, 20th century / Bridgeman Images

DGA3952890: Abandoned cannons in street of Asiago, World War I, Italy, 20th century / Bridgeman Images

DGA3952893: Buildings destroyed in Foza, Asiago Plateau, World War I, Italy, 20th century / Bridgeman Images

DGA3952905: Reconnaissance Caudron G3 ready for take off, World War I, Italy, 20th century / Bridgeman Images

DGA3952907: Two ladies with officers at Nastro Azzurro (Blue Ribbon) ceremony, July 22, 1917, Aviano, World War I, Italy, 20th century / Bridgeman Images

DGA3952912: Farman MF 11 Reconnaissance in flight, 3rd Fighter Group, World War I, Italy, 20th century / Bridgeman Images

DGA3953013: Aerial view of San Dona di Piave, in center, ruins of cathedral, World War I, Italy, 20th century / Bridgeman Images

DGA3953021: Aerial view of trenches on Mount Gronlait, November 22, 1915, World War I, Italy, 20th century / Bridgeman Images

DGA3953030: Aerial view of trenches and walkways south of Gallio, December 7, 1917, World War I, Italy, 20th century / Bridgeman Images

DGA3953031: Aerial view of bridge destroyed on Piave River, near Ponte di Piave, 19 June 1918, World War I, Italy, 20th century / Bridgeman Images

DGA3952959: Austrian biplanes damaged after aerial combat and landed in Austrian airfield, photo found on Austrian prisoner, World War I, Italy, 20th century / Bridgeman Images

DGA3952961: Austrian biplane brought down after aerial combat, photo found on Austrian prisoner, World War I, Italy, 20th century / Bridgeman Images

DGA3953047: Italian soldiers in observatory at hill 504, above Plava, World War I, Slovenia, 20th century / Bridgeman Images

DGA3953057: Troops' washrooms, Trench Mortars School depot, Nervesa della Battaglia, World War I, Italy, 20th century / Bridgeman Images

DGA3953060: 240 L trench mortar post, Trench Mortars School in Susegana, World War I, Italy, 20th century / Bridgeman Images

DGA3953159: Portrait of Lord William Thomson Kelvin (1824-1907), British physicist and engineer, engraving / Bridgeman Images

DGA3952781: Italian soldiers on Col of Lana after explosion of mine, World War I, Italy, 20th century / Bridgeman Images

DGA3952743: Italian Officers in Reconnaissance on front line, World War I, Italy, 20th Century / Bridgeman Images

DGA3952791: Italian soldiers in trench at hill 95, World War I, Italy, 20th century / Bridgeman Images

DGA3952760: Italian sentinel at advanced post, World War I, Italy, 20th century / Bridgeman Images

DGA3952767: Italian reinforcement troops by barracks at rear, World War I, Italy, 20th century / Bridgeman Images

DGA3952806: Italian command in cave on Karst, World War I, Italy, 20th century / Bridgeman Images

DGA3952823: Pigeon carrier of Italian Army, World War I, Italy, 20th century / Bridgeman Images

DGA3952942: Caproni Ca 33 Bomber, 3rd Fighter Group, World War I, Italy, 20th century / Bridgeman Images

DGA3951792: M12 Airship, crashed into Grado lagoon on July 23, 1917, towed to Grado, World War I, Italy, 20th century / Bridgeman Images

DGA3951798: Aerial view of trenches on Karst, World War I, Italy, 20th century / Bridgeman Images

DGA3952689: Ruins of Gorizia Railway Station, World War I, Italy, 20th century / Bridgeman Images

DGA3952694: Italian photoelectric station in snow in high mountains, World War I, Italy, 20th century / Bridgeman Images

DGA3952695: Projector in Italian trench on Mount Grappa, World War I, Italy, 20th century / Bridgeman Images