The only term I can think of which would be relevant is "Real Time Assessment", which isn't really that common a term. Are you sure you're not thinking of RTO - Radiotelephone Operator?
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
It is "Basic Active Service Date"
member of a State national Guard Unit
It means to change direction 180 degrees
They stand for the letters E and W.