It is "Basic Active Service Date"
This is not used in the U.S. military.
Bronetransporter
It means to be armed
To be forced into service
secured area
Extended combat training
Died While Missing
north Atlantic treaty organization
member of a State national Guard Unit
It means to change direction 180 degrees
They stand for the letters E and W.
If you're talking about military terms, it stands for Letter Of Notification