FC3 means Fire Controlman Third Class in Military
Similar to FC3
63B - Light Wheeled Vehicle Mechanic63Y - Track Vehicle Mechanic Mos
643ASG - 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
View all in Military