From the CA DMV-you are not required to register your vehicle in CA while you have valid DL and veh registration from another state:
Nonresident Military Personnel Operating a Vehicle in California
Nonresident military personnel,
and both military or civilian members of NATO who are not citizens of the United States are permitted to operate a vehicle in this state with valid license plates from either:
- the individual's home state or country or
- the state or country where the individual was regularly assigned and stationed when the license plates were issued, if the following requirements are met:
- The license plates displayed on the vehicle are valid plates issued by a foreign jurisdiction.
- The vehicle registration and license plates are issued to the military person or spouse of the military person.
- The vehicle registration and license plates are issued by the foreign jurisdiction where the military person was last regularly assigned and stationed for duty by military orders or a jurisdiction claimed by the nonresident military person as the permanent state of residence.
- If the vehicle is a motor vehicle, the owner or driver has insurance.
NOTE: Military orders
do not include military orders for leave, for temporary duty, or for any other assignment of any nature requiring the military person's presence outside the foreign jurisdiction where the owner was regularly assigned and stationed for duty.
This section applies to all vehicles owned by the military person or spouse except any commercial vehicle used in any business manner wherein the military person or spouse receives compensation.