N.H. Rev. Stat. Ann. § 263:28

Any member of the New Hampshire national guard while on active state duty as provided in RSA 110-B:6 may drive a commercial motor vehicle, as defined in RSA 259:12-e, without being specifically licensed as a commercial driver by the director. Notwithstanding any other provision of law to the contrary, a member of the New Hampshire national guard may drive such vehicle pursuant to his duties with the national guard, provided he has been qualified by the national guard for the driving of a vehicle of that type.