What does OS1 stand for?

OS1 stands for "OPERATIONS SPECIALIST PETTY OFFICER 1ST CLASS"

How to abbreviate "OPERATIONS SPECIALIST PETTY OFFICER 1ST CLASS"?

"OPERATIONS SPECIALIST PETTY OFFICER 1ST CLASS" can be abbreviated as OS1

What is the meaning of OS1 abbreviation?

The meaning of OS1 abbreviation is "OPERATIONS SPECIALIST PETTY OFFICER 1ST CLASS"

What does OS1 mean?

OS1 as abbreviation means "OPERATIONS SPECIALIST PETTY OFFICER 1ST CLASS"