IRN means Interface Revision Notice in Military
Similar to IRN
5CCGP - Fifth Combat Communications Group5M - Machinery, Manpower, Material, Measurement, and Method
6-DOF - Six Degree Of Freedom
60SSC - 60th Signal Service Company
615 AMOG - 615th Air Mobility Operations Group
63B - Light Wheeled Vehicle Mechanic
63Y - Track Vehicle Mechanic Mos
View all in Military