Africa
Army canteen
The collective nouns are canteen of water and a canteen of cutlery.
The word for a small metal container is canteen. C-A-N-T-E-E-N
Confederate States, if the canteen is from the US Civil War. If you are asking about a foriegn non-US canteen or modern canteen, I have no idea.
A flask is similar to a canteen.
A canteen is for drinks.
The Rangers that have issued handguns--machinegun crews, mostly--carry the M9 pistol. For most infantrymen--Rangers are extremely well-trained infantrymen--they'd be better off carrying another canteen than carrying a pistol.
The name given to a man-made water carrying structure could be "bottle or glass." Another man-made water carrying structure could be a flask, a tank, or even a water-skin. You might also carry water using a jar or a canteen.
Student Canteen was created in 1958.
Student Canteen ended in 1990.
Hollywood Canteen was created in 1944.