How do you deploy assault shield in black ops 2?

In Call of Duty: Black Ops 2, to deploy the Assault Shield, you need to equip it in your loadout first. Once in a match, press the appropriate button (usually the "B" button on Xbox or "Circle" on PlayStation) to deploy it in front of your character. The shield can be placed on the ground or leaned against a surface for cover, providing protection from enemy fire. Remember that it can be destroyed by explosives and sustained fire.