@Hvasquez09
Your active duty military pay can only be taxed by your SLR, regardless of where you are stationed. Your SLR and your HOR are two different things, as explained here:
https://www.military.com/money/personal-finance/taxes/home-of-legal-record-for-taxes.html
Thus, if you formally changed your military SLR during 2018 by filing DD Form 2058, then you should have filed your 2018 returns as a part-year resident of each of the two states.
Civilian (non-military) pay earned by you in a non-SLR state would be taxable to you as a non-resident by that state. It would also be taxable by your SLR, but in that situation you'd be able to take a credit on your SLR state return for the taxes paid to the non-SLR state on the income taxed by both. Civilian pay earned in your SLR would be taxable by your SLR.
**Answers are correct to the best of my ability but do not constitute tax or legal advice.
