Photos retrieved from:
http://www.oldpicz.com/australians-on-the-western-front-1914-1918/
http://www.history.com/topics/world-war-i/world-war-i-history/pictures/world-war-i-trench-warfare/british-soldiers-fighting-in-trenches
http://www.world-war-1-facts.com/World-War-One-Weapon-Facts/World-War-One-Tank-Facts.html
http://www.historyplace.com/worldhistory/firstworldwar/fourteen-points.htm
http://www.oldpicz.com/australians-on-the-western-front-1914-1918/
http://www.history.com/topics/world-war-i/world-war-i-history/pictures/world-war-i-trench-warfare/british-soldiers-fighting-in-trenches
http://www.world-war-1-facts.com/World-War-One-Weapon-Facts/World-War-One-Tank-Facts.html
http://www.historyplace.com/worldhistory/firstworldwar/fourteen-points.htm