Manufacturer coupons can be used at bases overseas for six months after they expire is the U.S. They need to be sorted according to food and non-food as the commissaries are split into two sections, one section of items you eat and items that would be found in a typical drug store. Then the two groups must be totaled with the totals being reported to the facility.
Several programs have been created to assist groups wanting to participate in this program. We use the site, Operation Coupon Program (www.ocpnet.org) and adopted an Army post in Italy.