the Ch 46 woudltn be used for Combat drops like you're talking about,if i understand your project correctly, NEither would the Ah 64, its an attack chopper, max troop load is 2, soldiers repelling fomr teh chopper, That woudl be a Black hawk, if you're going for American troops, and as well Most likely for the Britan troops as well..
IF you were trying for the russian look, or somethign similar, i'd shoot for a Mil-24 Hind, they had a decent troop load capacity.. 6 or so i think, plus its decked out with guns and what not.
you can try looking at www.the-blueprints.com
if i remember the address right, if that snot it, just google the blueprints and it'll show up, theres nice ref for Heli's Planes, JEts, Tanks, and other vehicles, both milirtary and non..
Best bet for modelign the soldiers would be to just grab random facve references, and model them, with a basic body, ..weapons can be found all over th eplace, just dependign on what you want..