J-7/JED means Exercises and Training Directorate of A Joint Staff in Military
Similar to J-7/JED
63Y - Track Vehicle Mechanic Mos643ASG - 643rd Area Support Group
645TD - 645th Tank Destroyer Battalion
66 TAC - 66th Tatical Aviation Command
67Y - AH-1 Attack Helicopter Repairer MOS
7 WVI - 7th West Virginia Infantry Regiment
75 RGR - 75th Ranger Regiment
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