Source: Windows Central // Call of Duty: Modern Warfare

Field upgrades are a new addition to Call of Duty: Modern Warfare, and they had another layer of complexity to your multiplayer matches. Field upgrades are rechargeable powers that can be used to aid you or your teammates. They usually are less potent than your average killstreaks,, but they recharge whether you are killing things or not.

I have really enjoyed using the field upgrades to bolster my combat ability and, more often than not, use them to help my teammates out too. The list of field upgrades is small right now, but I expect more to become available as DLC becomes available. Here's the current full list.

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Field upgrade Description Level requirement
Munitions Box Gives your teammates an ammo resupply crate that includes grenades. 1
Recon Drone Launches a drone that you control to tag enemies for your team. 1
Dead Silence Makes your footsteps quieter for a short time. Extends with each kill. 10
Stopping Power Rounds Your next reloaded magazine does extra damage. 19
Trophy System Destroys up to three incoming missiles or projectiles that come near it. 27
Deployable Cover Creates a steel wall for you or your teammates to mount against. 30
Tactical Insertion Allows you to respawn wherever you drop the flare. 40
EMP Drone Detonate an EMP payload at a targeted location using an RC Plane. Disables all electronics in the area. 46
Weapon Drop Deliver a cache of high power weapons to your location. 55

My personal favorite is the Tactical Insertion, as it lets you jump into a specific point, even if you die. I like to use it in a ground war map to mark a specific location I am defending. That way, I can jump back into the fray as needed. It's a bit of a dirty trick, but I have yet to find an enemy that wasn't surprised by it.

What's your favorite field upgrade so far? Let us know in the comments.