The Reenlistment, Extension, Reclassification, and Reserve Component Transition System (RETAIN) is the Army's computerized retention system for enlisted personnel. It contains all the reenlistment data required to document the retention of Army Service members, including tracking selective reenlistment bonuses (SRBs) paid and data required to transition active Army Service members to the Army National Guard and U.S. Army Reserves. DFAS and the Army activated an adjustment to the SRB portion ...