Carry on is said after a senior officer enters an area, and it means to continue on with what ever you were working on prior to his/her entering a room or area.
It means to be armed
This is not used in the U.S. military.
Bronetransporter
To be forced into service
secured area
Extended combat training
Died While Missing
north Atlantic treaty organization
It is "Basic Active Service Date"
member of a State national Guard Unit
If you're talking about military terms, it stands for Letter Of Notification
They stand for the letters E and W.