As you can see in the trailer, the engine takes care of all the expected stuff, and more. Awesome lighting and shadows, swaying trees, rain, snow and dust. Blood, spent casings, and muzzle flash. Smoke and explosions. They look almost real - almost cinematic. Look at how the dust rises around a tank when it fires, or how a helicopter's blades raise a mini snowstorm, or the any of the explosions!