Originally Posted by sewmuch
Thank you, yes he has an APO, just never done this before...he is in the Navy, first time away, good experience...
Flat rate boxes are the way to go. They also have special APO boxes that are the same size as the large flat rate box ($15) but they're priced differently (maybe $10.70?) and have different labeling. Stop by your local PO and they will have them.
And yes, fill them to the BRIM!!!