Call of Duty: Unseen Battles

"Call of Duty: Unseen Battles" is a first-person shooter in the series, developed by Treyarch and published by Activision. It takes place in the battles that are unseen, untold and unheard from the various wars.

Gameplay
The players can make their own decisions that affect the storyline, like they did in Black Ops II. The gore and blood system are now upgraded to a better version. Examples include: Ripping skull in half if they get shot by any rifles, exposed intensines after being perporated by machine gun fire or being blown up by artillery and bombs/grenades and torn-apart hands. Additionally, the players can now slide, mantle, climb up, crawl, swim, lean side and run while firing. Moreover, the weapons and vehicles are specifically chosen for the historic period. Like Black Ops series, the player characters can talk in cutscenes and gameplay.

Story/Campaign
TBA

The Great War (ACT 1)

 * The Day That Shook The World (Battle of Cer)
 * Tannenberg (Battle of Tannenberg)
 * Turning the Tide (Gallipoli Campaign)
 * Fields of Verdun (Battle of Verdun)
 * The Price of a Mile (Battle of Passchendaele)
 * Caporetto! (12th Battle of Isonzo)
 * The Lost Battalion (Meuse-Argonne Offensive)
 * Armageddon (Battle of Megiddo)

The 6-Year War (ACT 2)

 * Blitzkrieg (Invasion of Poland)
 * White Death (Simo Hayha, The Winter War)
 * For Tobruk! (Siege of Tobruk)
 * Union (Battle of Monte Cassino)
 * Rage in the Skies (Battle of Midway)
 * Hearts of Iron (Rescue Operation at the Elbe River)
 * August Storm (Manchurian Strategic Offensive)

The Hot Battles on the Cold Earth (ACT 3)
TBA

Melee Weapons

 * US Trench Knife M1918
 * Enveriye Dagger
 * Sturmmesser
 * Hungarian sturmtruppen knife
 * Italian Arditi dagger
 * Turkish Trench Club
 * Trench Club
 * M1881 Shashka
 * M1861 Offiziersabel
 * Feldspaten M1887
 * Couteau Mle 1916 "Le Vengeur"
 * Boker M1915
 * Modello 39 Combat Knife
 * Fairbarn Sykes Knife
 * Heer knife
 * Puukko
 * M1940 knife

Pistols and Revolver

 * Mauser C96
 * S&W .45 ACP M1917
 * M1911 .45
 * Modelle 1892
 * Glisenti M910
 * Luger P08
 * Nagant M1895
 * Steyr M1912
 * Chamelot Delvigne
 * Bode M1889
 * Montenegrin Gasser
 * Webley Mk. I
 * Walther P38
 * Tokarev TT-33
 * Beretta M1934
 * Webley Mk. VI
 * Enfield No. 2 Mk I
 * Makarov PM
 * Browning Hi-Power

Sub-Machine Guns

 * MP38 / MP40
 * PPSh-41
 * PPS-42
 * Thompson M1A1 / M1928 / M1928A1
 * Grease Gun
 * MAT 49
 * K-50M
 * MAB 38
 * MAT 49
 * FNAB-43
 * OVP M1918
 * Sten Mk. II / Sten Mk. V
 * Suomi KP-31
 * KP-44
 * Owen
 * F2

Bolt-Action Rifles

 * RSC 1917
 * Lebel M1886
 * Gewehr M1898
 * Lee Enfield Mk. III No.(I)
 * M1910 Ross Mk. III
 * M1917 Enfield
 * Lee Enfield Mk:I No.(4)
 * Turkish Mauser M1903
 * Carcano M91
 * Mosin Nagant M-91
 * Steyr Mannlicher M1895
 * Serbian M1889 / M1890
 * M1 Carbine
 * M1A1 Carbine
 * Mosin Nagant M91/30
 * SVT-40
 * Wz.29 Mauser
 * MAS-36
 * Karabiner 98k
 * Gewehr 43
 * Arisaka Type 99

Lever Action Rifle

 * Winchester M1895 Russian

Assault Rifles/Carbines

 * Mkb. 42 (H)
 * STG-44
 * AKM
 * Norinco Type 56
 * Colt M16A1
 * XM177E1
 * AK-74
 * AKS-74
 * L1A1

Light Machine Guns

 * BAR M1918
 * Lewis M1914
 * Madsen M1902
 * Bergmann MG15 n.A
 * Maxim MG08/15
 * FM M1915 C.S.R.G. "Chauchat"
 * Browning M1918A2
 * DP-28
 * LS-26
 * Browning Wz.28
 * MG-34
 * MG-42
 * Type 99 LMG
 * L2A1
 * RPK-74
 * RPK
 * M60
 * MAC FM24/29
 * PKM