definition
strict definition
military office
Office premises used for the administrative work of military institutions, including dedicated recruitment offices.
Office space devoted to administrative functions of the military is classified as military office.
Administration is the activity taking place in the office. A military affiliation does not make every military site an office: training grounds, housing, and weapons stores have their own uses.
A military recruitment center is a specific office function devoted to attracting and enlisting personnel. More general administration can meet the military-office definition without a recruiting function.