Great Job!
Doubleplusgood game :P I can tell you spent a lot of time with it :)
Things to improve on if and when there is a sequel:
-Camera shaking is a little irritating
-How about the ability to upgrade weapons in a similar manner to the vehicles?
-The ability to add more troops maybe?
-Snipers. Need those snipers.
-Customizable squads?
-Hotkeys hotkeys hotkeys.
Besides those, Job well done. Can't wait till next one :D