To ensure timely delivery of holiday wishes by Dec. 25, send cards and packages to military APO/FPO/ DPO addresses overseas no later than the mailing dates listed below.

Addressing the Package

1. Write out the service member’s full name in the address.

2. Include the unit and APO/FPO/DPO address with the 9-digit ZIP Code (if one is assigned). For example:

CPT JOHN DOE
UNIT 2050 BOX 4190
APO AP 96278-2050

SGT ROBERT SMITH
PSC 802 BOX 74
APO AE 09499-0074

SEAMAN JOSEPH SMITH
USCGC HAMILTON
FPO AP 96667-3931

MSG JANE DOE
CMR 1250
APO AA 09045-1000

3. Include a return address.

4. Include the service member’s name and address as well as the sender’s name and address on an index card inside the package in case the label is damaged.

Source: http://about.usps.com/news/national-releases/2014/pr14_053.htm