1-77th AR & 4-6th IN Armor Crewmen Prepare for the Sullivan Cup. Video by Sgt. Michael Grimm | 4th Brigade Combat Team, 1st Armored Division | Date: 05.22.2013. Soldiers of 1-77 AR and 4-6 IN preparing for the Sullivan Cup. The Sullivan Cup is a national multi-branch tank competition for the U.S. Armed Services. HD Video.
