U-boats - http://upload.wikimedia.org/wikipedia/commons/9/91/U534.jpg
Anti-tank rifle - http://www.lcarsmotorcycles.com/wp-content/uploads/2014/11/captured-german-anti-tank-rifle---ww1.jpg
German plane - http://www.buscla.org/EZ-PhotoAlbum/Album10_WWI_Ger/Albatross_D.III_fighters.jpg
Mark I Ross rifle - http://milpas.cc/rifles/ZFiles/Bolt%20Action%20Rifles/CANADIAN%20ROSS%20RIFLE/Ross%20Mk%20III-M1910.jpg
Lee-Enfield - http://www.deactivated-guns.co.uk/images/uploads/1915lsa/1915lsa-025526_5.jpg
Allied Lewis - http://s6.uplod.ir/i/00544/3dysnpdn0rjn.jpg
Allied Colt - http://browningmgs.com/Images_1919A4/Brownings/ColtCommercial1917_right.jpg
Aliied Vickers - http://wartime.org.ua/uploads/posts/2012-04/1334991241_1.jpg
German MG08 - http://www.militaryfactory.com/smallarms/imgs/maxim-mg08.jpg
Sinking Lusitania - http://i.dailymail.co.uk/i/pix/2012/07/12/article-0-14059853000005DC-49_634x380.jpg
American regiment - http://upload.wikimedia.org/wikipedia/commons/2/2e/US_64th_regiment_celebrate_the_Armistice.jpg
Active Battle Painting - http://www.warmuseum.ca/firstworldwar/wp-content/mcme-uploads/2014/07/19710261-01611.jpg
Anti-tank rifle - http://www.lcarsmotorcycles.com/wp-content/uploads/2014/11/captured-german-anti-tank-rifle---ww1.jpg
German plane - http://www.buscla.org/EZ-PhotoAlbum/Album10_WWI_Ger/Albatross_D.III_fighters.jpg
Mark I Ross rifle - http://milpas.cc/rifles/ZFiles/Bolt%20Action%20Rifles/CANADIAN%20ROSS%20RIFLE/Ross%20Mk%20III-M1910.jpg
Lee-Enfield - http://www.deactivated-guns.co.uk/images/uploads/1915lsa/1915lsa-025526_5.jpg
Allied Lewis - http://s6.uplod.ir/i/00544/3dysnpdn0rjn.jpg
Allied Colt - http://browningmgs.com/Images_1919A4/Brownings/ColtCommercial1917_right.jpg
Aliied Vickers - http://wartime.org.ua/uploads/posts/2012-04/1334991241_1.jpg
German MG08 - http://www.militaryfactory.com/smallarms/imgs/maxim-mg08.jpg
Sinking Lusitania - http://i.dailymail.co.uk/i/pix/2012/07/12/article-0-14059853000005DC-49_634x380.jpg
American regiment - http://upload.wikimedia.org/wikipedia/commons/2/2e/US_64th_regiment_celebrate_the_Armistice.jpg
Active Battle Painting - http://www.warmuseum.ca/firstworldwar/wp-content/mcme-uploads/2014/07/19710261-01611.jpg