American, for the M-1 Garand rifle.
The little cup of Rifle Grease, a toolkit (Cleaning Rod, Hndl/Scrwdriver, Chmbr Tool, Jag, Bag), a bottle of Oil, all were carried in the Butt.
It is just AMAZING how many guys don't GREASE their Garands, Carbines, M-14s, Mini-14s. Depending on the piece, they need Grease in 6 to 9 places and, if they don't get it, the rifles wear out very rapidly.
Same Oil Bottles were issued with the last Springfields; M-14/15 got the same with Grease Cups thrown in.