I haven't really been into Shadowrun since 3ed, and I never really saw it brought up. Is there a general description of major militaries in Shadowrun? This would include corporate military forces fighting in the desert wars as well as things like the United Canadian American Armed Forces. If anyone has anything official or home brewed, I think it'd be neat to see.

Lots of references to the UCAS Military during the Renraku Arcology Shutdown.

And lots of descriptions of the military base in Seattle in Runner's Havens.

and old shadowrun novel, just compensation by.....lemme check....charrette details life in the UCAS back in the 2050s pretty decent read and some interesting explanations.