The Post Office-Camp Walker is fall under USAG Daegu.
Format address when mailing APO/FPO/DPO.
First & Last Name
Include the unit and box (where applicable) into Address Line 1
City will be APO/FPO/DPO
For state From the State field, select:
Armed Forces - AE is the abbreviation for Armed Forces. It is used for armed forces in Europe, the Middle East,
Africa, and Canada
Armed Forces Pacific - AP is the abbreviation for Amed Forces Pacific and is used for the Pacifics
Armed Forces America - AA is the abbreviation for Armed Forces America and it excludes Canada
Five Digit Zip Code
Note: APO is used for Air/Army Post Office; FPO is used for Fleet Post Office; DPO is used for Diplomatic Post Office.
Example:
Army/Air Post Office (APO)
PFC JOHN DOE
PSC 3 BOX 4120
APO AE 09021
Source: USPS