Address Instructions for APO addresses:
You don’t need to provide anything except for a standard text box for the city portion of an APO, FPO or DPO address. The city will always be either “APO”, “FPO” or “DPO” in a properly formatted APO FPO address.
Select AA, AE, AP for the State.
Select United States for the country. Customers should never indicate the host country (e.g. Germany) in their APO/FPO/DPO address as these addresses are considered “domestic” by the USPS.