It came up a second time, because you probably had an empty W-2 that transferred into 2023 from your 2022 file.
Go back to the Federal Wages& Income are...go down to the W-2 section....go in and delete the extra W-2. If you've already filled out both....delete one, then Edit the remaining one again to go thru it and make sure every box is entered correctly.
On the page after that main form, make sure you check the box (buried in a big list) indicating that it is a military service W-2.
____________*Answers are correct to the best of my knowledge when posted, but should not be considered to be legal or official tax advice.*