Hello! These guys are indeed 82nd Airborne (with a couple of 101st patched figures included as well, as far as I know). They represent glider-borne infantry from the division though, as opposed to the more commonly modelled paratroopers with baggy M42 airborne uniforms, jump boots etc.
At this stage in the war in Europe (circa D-Day and the Battle of Normandy), glider troops within US Airborne formations were still uniformed and equipped almost identically to their regular "leg" infantry counterparts; hence the gaiters over the boots and the M41 field jackets. I suppose the logic behind that being that they wouldn't actually need some of the specialised paratrooper uniform items like jump boots.
Not sure what the uniform situation for US glider troops later in the ETO was (Operations Market Garden, Varsity, etc.), but for D-Day, these figures are spot on. A quick online check reveals that the 325th Glider Infantry Regiment of the 82nd landed in Normandy on June 7th, 1944 to reinforce the division, and presumably saw action with it thereafter for the remainder of its participation in the campaign. Ditto the 327th GIR for the 101st Airborne.
Hope this helps.
Molloy.