Leave (military)
In military
A military is an organization authorized by its greater society to use lethal force, usually including use of weapons, in defending its country by combating actual or perceived threats. The military may have additional functions of use to its greater society, such as advancing a political agenda e.g...

, leave is a permission to be away from one's unit, either for a specified or unspecified period of time.

The term AWOL, standing for absent without leave, is a term for desertion
In military terminology, desertion is the abandonment of a "duty" or post without permission and is done with the intention of not returning...

used in armed forces of many English speaking countries.

Various militaries have specific rules that regulate leaves.

Block leave is a term used to refer to time alloted to be spent with families independently of their units and where they must not report to their units while on rotation from their tours.
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