N.H. Rev. Stat. § 261:91
Upon payment of the motor vehicle registration fee, if any, the director shall issue and shall designate a special plate, to be affixed to the vehicle of the county sheriffs, deputy sheriffs, members or retired members of the national guard of any state, active-duty members of the armed forces, justices of the supreme and superior courts, and vehicles of state police and motor vehicle divisions and municipal fire and police departments. The special plates shall have the state motto, "Live Free or Die," written on them and shall be issued with no number plate fee being charged to the state other than for those plates furnished to the state police and motor vehicle divisions. Special number plates issued to members or retired members of the national guard of any state, active-duty members of the armed forces, and justices of the supreme and superior courts may be attached only to vehicles registered in the name of the person issued the plates, except as provided in this section. Special plates for active-duty members of the armed forces shall be distinct from special number plates for veterans. Surviving spouses of retired members of the national guard of any state may use the special number plates indefinitely after the death of the retired member until the date that the surviving spouse remarries. Upon surrendering special number plates for a deceased active-duty member of the armed forces, surviving spouses of the active-duty members are eligible to be issued special number plates for veterans under RSA 261:87-b, as long as the deceased active duty member qualifies as a veteran as defined in RSA 21:50, and the surviving spouse may use the special number plates for veterans indefinitely after the death of the active duty member until the date that the surviving spouse remarries.
RSA 261:91
1953, 81:1. RSA 260:10 . 1955, 28:1; 143:2. 1957, 136:1. 1973, 163:1. 1981, 146:1. 1983, 253:1. 1998, 28:1. 2005, 295 : 3 . 2008, 100 : 1 ; 138:2. 2013, 170 : 1 , eff. Aug. 31, 2013.