Do you have ammo reserves that will get rid of infinite rounds of enemy Operators but a single bullet scratch will kill you due to your lack of armor? And vice versa? Well, you are in luck! Here is how to get and use the Utility Box Field Upgrade in Warzone.What is the Utility Box Field Upgrade in Warzone?The Utility Box is a Field Upgrade – thanks, Captain Obvious – which is exclusive to Rebirth Island. This Field Upgrade will modify all the existing Ammo and Armor boxes across the map and convert them into Ammo AND Armor boxes. This means that you will be able to resupply the entirety of your weapon’s ammo, armor, lethals, and tacticals.Image: ActivisionThis will end up with you only needing one slot in your inventory for one single resupply box, which will become vital when you get to the end game. Not only that but this field upgrade will also apply to the rest of your squad members, making it a very useful and strategic Field Upgrade that you will…