'In Theater' refers to serving in a combat (IE: Afghanistan) or operational (IE: Kuwait) environment.
Out theatre means to be outside the main area of combat or theatre of operations
It means to be armed
Died While Missing
They stand for the letters E and W.
It means to change direction 180 degrees
Midway
This is not used in the U.S. military.
Bronetransporter
Physical plant in terms of theater means the actual building the theater is housed in, or in other words, the architectural home that the theater space is a part of.
To be forced into service
It means to be armed
secured area
Extended combat training
Died While Missing
north Atlantic treaty organization
It is "Basic Active Service Date"
At an average theater the ticket price, is $9.75. With a military discount it is $7.00
member of a State national Guard Unit