Military client in 2023 earned wages from DFAS and a w-2 from Home Depot bef9re he enlisted.

He stationed in Virginia, but his residency is in California.  I have been reading that he is not required to

pay California taxes on the earnings from DFAS. Is this correct? if so, what form is there to select or confirm is military status?  Does he become a part non resident?  Need some guidance.

Thank you

Tax Wiz