Idaho Code § 46-213
Enlisted personnel of the national guard may be transferred upon their own application from one (1) organization to another in the same manner as prescribed in the federal regulations of the department of the army and the department of the air force. Transfers of enlisted persons and of noncommissioned officers may be made from one (1) organization to another or from one (1) arm of the service to another, when in the judgment of the adjutant general the interests of the service demand such transfers; provided, that commanders of regiments, groups, separate squadrons, or separate battalions in the active service of the state may make such transfers within their regiment, group, separate squadron, or separate battalion as they may deem advisable for the good of the service.
Idaho Code § 46-213