A branch of the military mainly devoted to air warfare, as opposed to (land) army and navy.
A unit in the U.S. Air Force larger than a division but smaller than a command.
Government policy or (infra)structure related to the military.
A strategy and tactics employed to prevent the other team from scoring; contrasted with offence.
The portion of a team dedicated to preventing the other team from scoring; contrasted with offence.
Something used to oppose attacks.
The action of defending, of protecting from attack, danger or injury.
An argument in support or justification of something.