Types of Ops Edit
Operations that follow the main story line of metal gear solid peace walker.
Operations that allow the player to send out soldiers and vechicals to take on predetermend enemies.
Vehicles captured via Main Ops and Extra Ops can be used here.
Side missions that can are unlocked as you play through Main Ops.
Many weapons and items can only be obtained through Extra Ops. Also, some vehicles can only be captured through Extra Ops.