[quote=@HachiRoku]
[@Sola]
In terms of ammunition for .45 ACP, I suppose it's possible there are underground cells with stocked American ammo, from pre-Japanese invasion. Keep in mind before 1942 the Philippines were an American overseas puppet state so it's possible that some supplies would be sneaked underground. 
[/quote]

Probably but I imagine most of it would be dragged out to combat the Japanese, or pulled back home after the Japanese conquered the islands. Ultimately it's up to [@LetMeDoStuff].