This is disgusting, but I'm happy it exists. Sort of. This is a live-action trailer called "Chum Rush" for third-person multiplayer-only Plants vs. Zombies: Garden Warfare.
You've got your conventional warzone in a generic location with run-of-the-mill insurgents, and you've got your soldier running out from behind cover, ready to be the All-American Hero – with a chirping dolphin gun. Both the soldier and the dolphin bare their warfaces as rocket-propelled chum starts shooting out of the dolphin's mounted guns. So gross. This is normally the kind of thing you'd only see in Postal or Saints Row or something.
Plants vs. Zombies: Garden Warfare launches chum at your face on February 25 for Xbox 360 and Xbox One, and for PC on February 27.