Thank you DaveF1006. Perfect reply that resolved my question.
It was not intuitive with a title "Military Benefits Subtraction" as military retirees would be searching for "U.S. Military Retired Pay" exclusion or something similar, but it's taken from the Virginia State Tax form which is derived from the IRS 26 USC 134. So I learned something.
In retrospect, I should have researched the Virginia 2022 Form 760 Resident Individual Income Tax Instructions.
