If one drone could be a tank, it would be the Shadow. A hardy and known king of the battleskies, the Shadow is one of the few combat drones that demands its own unit to operate, and it’s assigned as standard equipment to every brigade-sized formation, just like artillery.

Little heralded or known, in the actual revolution that brought small drones into virtually every combat unit of all four military services, Pointer was a pioneer. Developed first for the Marine Corps in 1986, Pointer was the first hand-held drone—45 pounds and transportable in a backpack. They were used in Desert Storm in 1990 and ended up being the first drones on the ground in Afghanistan after 9/11, later serving in Iraq.

Gone, but it shouldn’t be forgotten. Pioneer has the distinction of being the only U.S. military drone that has flown in every major conflict from 1991’s Desert Storm to the 2003 Operation Return for Another Try. Officially retired in 2010 after its “successful” use by the Marines in al Anbar province in western Iraq, Pioneer has flown. And flown. And flown.