After two years of study and debate, the Department of Defense has made a policy change, effective next November, to allow 16 million honorably discharged veterans to shop online for discounted military exchange products. Peter K. Levine, acting undersecretary of defense for personnel and readiness, signed a memorandum Wednesday announcing the benefit expansion, effective Veterans Day (Nov. 11), and giving Congress the required 30 days’ notice before actions begin to implement the plan.