 The Sullivan Cup provides a realistic and challenging tank crew competition that will build esprit de corps within our armor force and returns the pride of mobile protected firepower gunnery to its rightful place in the mounted force's mindset.The Gainey Cup is named in honor of Command Sergeant Major William “Joe” Gainey, the first Senior Enlisted Advisor to the Chairman of the Joint Chiefs of Staff (SEAC).During his extraordinary 33 years of service to our nation, he served in multiple enlisted leadership positions, from gunner to command sergeant major.