O7 means Officer grade: Commodore, Rear Admiral Lower Half, or Brigadier General in Military
Similar to O7
102 RQS - 102nd Rescue Squadron106 RQW - 106th Rescue Wing
10BASE-T - 10 Megabits per second, Baseband, Twisted pair
11AD - 11th Airborne Division
11B - Military Occupational Specialty for Infantryman
11z - Command Sergeant Major Military Occupational Specialty code
12 WVI - Twelvth West Virginia Infantry Regiment
View all in Military