Recon troop in the battlefield is more like eyes of a hunter in the woods.
While the war changes rapidly, Commander has to adjust strategies accordingly about how to prepare armaments, what troops to be trained and how to dispatch forces.
Investigation of enemies is necessary before Commander makes any decision. In this way, you can avoid facing the strongest part of your enemy and attack the weakest instead.
Recon aircraft and recon vehicle are highly recommended as early trained troops. They move very fast though they do have low viability and weak fight ability in battlefield, which means you have to be cautious and protect your “eyes”.