Aeriel Combat by Adrian D and Tyler D
Allies (Triple Entente) by Alyssa S
Alvin York by Xander K
Armenian Geocide by Zach J
American Expeditionary Force by Cassidy S
Armored Trains by Roman O
Amputations and Phantom Limbs by Kayla P and Ella M
Anthony Fokker by Hannah A and Ella W
Assassination of Archduke Franz Ferdinand by M'Kayla C and Malika N
Barbed Wire by Tyler B and Adan M
Battle of Amiens by Connor K and R'Mani S
Battle of Gallipoli by Sofia I
Battle of Jutland by Chandler S
Battle of Megiddo by Lincoln H and Vakaris M
Battle of Osowiec Fortress by Rocco L and Graham F
Battle of the Somme by Josh S
Battle of Tannenburg by Brynn L and Nathan C
Battle of the Marne by Brayden L and Tom D
Battle of Verdun by Bryce S
Black Hand by Alan K
Brazil in WWI by Jayden L
Central Powers (Triple Alliance) by Gabe R
Christmas Truce of 1914 by Mitchell R
Code Talkers of WWI by Lincoln I and Aaron G
Convoy System by Danny B
Dreadnaught by Chris S and Jonas A
Flamethrower by Kendall B and Jimmy E
Gas Masks by Karen I
Hand Grenade by Sam R and Ahad M
Indian Army by Nick P
Interrupter Gear by Anthony L
Iron Cross by Sean S and Camden S
Lost Generation by Kyaire E
Machine Guns by Ramis M
Medal of Honor by Max B
Military Cross by Ellie Bliss
Mustard Gas and Gases by Christopher J
Observation Balloons by Bella Z and Maya S
Parachutes by Leslie A
Prisoners of War by Zamarion T
Propaganda by Sarah G
Red Cross by Gwen J
Runners by Charles B
Shell Shock by Adrian W and Jackson N
Spanish Flu of 1918 by Kami N
Strategic Bombing of Britain by Mimi G and Gabby M
Tanks by Gavin T and Dylan S
Torpedos by Jack S and Jackson S
Total War by Cami F and Carsyn M
Trench Warfare and No Man's Land by Hayden M
Triple Entente (Allies) by Isabella R
Tsar Nicholas by Milo P
U-Boats by JJ Nicholas
Women's Royal Airforce by Briana R
WWI Signal Corps Women by Addy E
Zeppelins by Matt L
Tunnel Warfare by Gabby C
Dardanelles Campaign by Jillian V