Go get 'em, trooper! Garry Owen!!
Getting my butt thumped by manolo_maximo showed me how vast my expanse of ignorance understanding this game truly extended . . . :shocknaz:
I am learning the in-game "Tools" (lower left screen arrow icon) to be quite helpful. You can toggle several bits of very useful information at any time. I'm finding detailed unit info, command range, LOS, and LOF more and more important as I play more games. You can also CTRL-L click on a unit any time to see the quality of its POA (Points of Advantage) throughout the game.