This is a 1930's French gas mask. Not exactly WWII, but almost.
In this picture is an ammo case (era unknown, probably post-war (EDIT: The container has "M60" stamped on it, the M60 being a machine gun introduce in the late 50's), WWI trench mortar, a .50 cal bullet, and a chain of empty shells that I just thought was cool.
The following ones are my favorites. This is an U.S. M8 knife in an M8A1 scabbard. This is post WWII.
This is a German dress bayonet from WWII. It's just to look nice, it was never used in combat (although it's still just as effective).
This is a WWII Japanese Type 30 bayonet. The other side of the blade has a small engraved marking on the blade indicating the armory it came from.
This is a WWII German Mauser Kar98K bayonet.
And finally, this is a WWII German NCO officer's saber.
