>>96745130
If you want something more specific there's the builders parts ms figures which are MG or HG scale pilots and crew. There's also a couple of kits that have come with infantry, but they're pretty uncommon.
HO, 1/72, those are gonna be way bigger. They're about double the size. Sometimes buildings are close enough to fudge it but humans will probably be a bit off. 10mm or 12mm scale wargame figures are probably the nearest substitute.