Depending on the map, I may or may not have scouts. If there is no place to hide, why try? Just send in a suicidal HUMV or load up the cavary. Sometiems the most effective scouts are the APCs and utility vehicles that are left burning in the field. They found the enemy, and he can take xxx kinds of vehicles, that's all you need to know. Not only that, but they can provide cover too.
