S/SU/AC means Systems/ Systems Upgrades and Advanced Concepts in
Military
Similar to S/SU/AC
180FA - 180th Field Artillery Regiment
189FA - 189th Field Artillery Regiment
1BCT - First Brigade Combat Team
1CAV - 1st Cavalry Division
1CD - 1st Cavalry Division
1LT - First Lieutenant
1MC - General Announcing System
View all in Military