What address shall i put in the end when i'm stationed in the military and stationed overseas?

Your address should be one where you can get correspondence from the IRS should they need to contact you.

To Edit Mailing Address to use APO:

1. Open return (if not already there).
2. Click on Personal Info and edit the Mailing Address.
3. Under Type of mailing address in the dropdown choose Military (APO, FPO, or DPO).
4. Under APO/FPO/DPO in the dropdown choose APO.
5. Under State code in the dropdown choose your location.

or the state code on the dropdown select -

• Armed Forces the Americas (AA)
• Armed Forces Europe, Canada, Africa, or the Middle East (AE)
• Armed Forces Asia or the Pacific (AP)

Please see screenshots below.