You can google this:

military service irs income tax filing

And find resources you will study to learn from. Examples:

https://www.irs.gov/individuals/military

https://www.irs.gov/newsroom/tax-filing-tips-for-military-service-members-and-veterans

https://www.irs.gov/site-index-search?search=military&field_pup_historical_1=1&field_pup_historical=...

Then, you do the same thing but put their State of residence in the search, such as:

military service MA income tax filing

And make sure to read for Resident, Nonresident, and someone stationed overseas. Learn all the scenarios that apply.

So does a woman in the service.........