User blog comment:Damac1214/Call of Duty: Advanced Warfare Reveal Trailer has Dropped/@comment-4841619-20140502085703/@comment-2224625-20140503053310

Not necessarily,  especially if you go dieselpunk. You could end up always making a few yourself.

For WWI, how about you have as many weapons that existed in the world at that time as possible.

For example:

Pistols: C96, Webley Mk. IV, Nagant 1895, Luger P08, Single Action Army (for fun), M1911

SMGs: MP-18 and some fictional ones if you will (prototype allied weapons?)

Bolt Action Rifles: Gewehr 98, SMLE, Mosin-Nagant, Arisaka Type 38, Springfield (all can be made into snipers), Lebel

MGs: (converted to be carried) Chauchat, Lewis Gun, MG08/15 (like Origins), and something else; fictional or maybe a hand-held Vickers

Grenades: Mills bomb, Steilhandgranate, etc.(perhaps an improvided TNT pack)

Shotguns: Model 1887, etc. (can't think of any right now)

For the SMGs, if they wanna go origins and spill over a bit into the next WW (especially if they wanna go dieselpunky) then they could have stuff like Lancasters, or maybe early Thompson. They could also add some fictional semi-automatic rifles (the design did exist at the time; source: http://en.wikipedia.org/wiki/Fusil_Automatique_Modele_1917)

As for attachments, they can use their imaginations. Do stuff like fabricated attachments: glass aperature sights, perhaps fabricated from a monacle or something ( :P ), artificial suppresors (make it obvious they aren't fantastic), supplementary, larger magazines (Sturmtruppen did have supplementary 25 round magazines for their Kar98 carbines; I think some other natons made similar designs). Bayonets, etc. Water coolers for MGs so they don't overheat, recoil compensators. You can also have early flamenwerfers, maybe in its own category.

As for killstreaks, they can have stuff like having the maps open enough so you can call in a tank to roll across the battlefield, the player taking the role of a gunner. They can also have a biplane come in and strafe the map, maybe the player controlling the guns). There can also be mortar strikes, dogs, gas attack (gas mask equipment to save onself from effects?), supply drop from a bomber, bombing run, Zepellin coming in (player controls bombs and MGs as the Zepellin slowly advances across the battlefield, vunerable to enemy killstreaks (like the biplane one) and ground fire from MGs.

As an added bonus, have full customization of soldiers. Also make it so maybe you have to customize the soldier depending which team you're on: an Allied soldier having Allied nation uniforms (kepis, brodie helms, etc.) while Central Powers get Central Powers uniforms (pickelhaubes, stahlhelms, mountain caps, turkish fezes, Turkish military caps). Maybe have something like crossing over uniforms at a certain rank or doing challenges (you get to unlock enemy uniforms). Maybe have the ability to unlock armor for better protection or something. There can also be like the ultimate thing to get is a set of Samurai armor (just for funsies). Maybe that's for Allies (Japan was on the Allies side in WWI, after all), and a Ritter-like armor for Central Powers. Maybe both have access to Samurai armor.

You can also have an array of knives, like Bowie knives, bayonets, cleavers, trench axes, etc.

Maps can be set around the world, from Tanzania, to France, to Russia, to the Arabian peninsula. It's not impossible to make such a game fun