most the regs i came into contact were a bit shit (regs are regular infantry) and no offence but alot of the american natinol guard (we were on base with them in kandahar, which is australias headquarters in afganistan) were mainly pricks who just wanted to shoot shit, but with most millitarys the upper forces (marines, seals, berets, in my case 3rd RAR (paratroopers), and the sas which is one step above my old unit) they have thier head on straight, and are alot more proffesinal dealing with enemy combatabts and local population.
for that reason i really did not like working with the US millitary much except for the airforce and the navy seemed ok, but my unit pretty much had nothing to do with regs when working in the forward operating bases, they are untrained, unmotivated and unproffesinol.
of course there are exeptions to that rule and nearly all of them deserve your respect.