reserves has definitions from the field of military
1
[ noun ] (military) civilians trained as soldiers but not part of the regular army

Synonyms

militia

Used in print

(Public Papers of the Presidents of the U.S. D. D....)

Under modern conditions , this is especially true of the ready reserve .

These strengths are considered adequate to meet the essential roles and missions of the reserves in support of our national security objectives .

The second capability is represented by our deployed ground , naval , and air forces in essential forward areas , together with ready reserves capable of effecting early emergency reinforcement .

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