A line of military soldiers defending
This is not used in the U.S. military.
Bronetransporter
A slip cordon is a group of fielders playing the slip position on the field.
To be forced into service
It means to be armed
The Army doesn't change the English language - it means the same thing in the Army as it does to civilians. Cordon is a word with multiple uses. It is both a noun and a verb, with several definitions between them. As far as military matters go, it would be used as a verb, the definition of which is "to surround or blockade with or as with a cordon", or as a noun, one of the definitions being "a line of police, sentinels, military posts, warships, etc., enclosing or guarding an area".
Died While Missing
Extended combat training
north Atlantic treaty organization
It is "Basic Active Service Date"
i guess. i mean it should be. it depends on what you mean.