Are you still with me? Then by all means, read on. There is no base, you construct no buildings, you do not lead, or train, an army, being discovered by the enemy forces is seldom something you will survive(and you can neither build a defense to keep them at bay nor overwhelm them with superior numbers), at no point do you gather resource, and Fog of War takes a prolonged vacation for the entire duration of this(presumably, it needs it, so much work for so many franchises).
But before the world knew this title, it would have been difficult to come up with many that steer clear of the standard formula. maybe even name some favorites and/or the best released. When one thinks RTS(if one is aware of what that is an abbreviation of, mind you), one is likely to be able to think of a multitude of such games.