OPNAV means Office of the Chief of NAVal OPerations in Military
Similar to OPNAV
1WVI - 1st West Virginia Infantry Regiment1WVLA - 1st West Virginia Light Artillery Regiment
2 WVI - 2nd West Virginia Infantry Regiment
2-D - Two-Dimensional
201MIB - 201st Military Intelligence Battalion
20SCVI - 20th South Carolina Volunteer Infantry Regiment
21CLW - 21st Century Land Warrior
View all in Military