What does OS1 stand for?
OS1 stands for "Operations Specialist Petty Officer First Class"
How to abbreviate "Operations Specialist Petty Officer First Class"?
"Operations Specialist Petty Officer First Class" can be abbreviated as OS1
What is the meaning of OS1 abbreviation?
The meaning of OS1 abbreviation is "Operations Specialist Petty Officer First Class"
What does OS1 mean?
OS1 as abbreviation means "Operations Specialist Petty Officer First Class"
