Pretty good...
Okey...I agree with Voodazz, it's a pretty exagerated throw...A guy cant throw a grenade that far...And a grenade usualy takes 8 seconds to detonate, and thats pretty much I know but it would probably explode before it hit the ground if somebody threw a nade that far...Otherwise, pretty good.
And I think you could do something like Omaha Beach or some Normandy battle