Battlepacks contain a combination of new weapon accessories, dog tags, knives, XP boosts, and character customization items. The packs are designed to add an all-new layer of multiplayer persistence with an exciting element of chance, and are awarded during gameplay. Offer valid when shipped and sold by Amazon.com. Amazon reserves the right to change or terminate this promotion at any time. Access code will be emailed within two business days after your order is placed. This offer will be extended to all existing pre-orders. Amazon reserves the right to change or terminate this promotion at any time. Limited to one per customer order.