"Free Shipping to Deployed Soldiers"

My son is active in the Army, and he is on his 3rd deployment. The flat rate APO boxes r nice but they dont hold very much, and when you have to send many it gets a little costly, dont get me wrong I would take my last dollar to send a package to any deployed soldier. I have 3 I know including my son that is deployed now. And about every 2 weeks i send the 5-6 boxes and at 13.45 a box! Then in between those weeks I send 1 or 2 just to keep them stocked since it takes so long to get there. I know there is many other people out there that in the same position that I am in. If they cant give free shipping at least give us a bigger box.
I think our soldiers would be able to get more stuff sent from home if this was to happen.