Wargame: European Escalation prioritises information over all else on its battlefield. Knowing where your enemy is, and what company they're keeping, is tantamount to victory - provided you know how to act on that information.
A tank without a recon unit nearby is all but blind, their poor optics barely making out a squadron of T-72s in an empty field let alone the Marden Tank Destroyers hiding in the tree line a kilometre away. But with a recon helicopter flying overhead relaying enemy positions they become deadly cannons, blasting expensive tanks into burnt-out husks.
Wargame's from Eugen Systems, the makers of Act of War and RUSE, and it takes the latter's macro approach to the RTS. You're set in the hypothetical world of the Cold War gone hot, and provided with a battle-map whose size is daunting at first. Fields, towns and giant, turgid rivers all break up the landscape, offering a mix of cover, insurmountable terrain and a sense of terrifying agoraphobia.