WarGonzo, a.k.a. Semyon Pegov.
Although he got injured some months back (October, he stepped on a butterfly mine) and is rumored to be missing a foot. My impression was that at most, he lost a few toes. Then again foot damage could explain why the dead guy in the trench was wearing sneakers, those might be more comfortable for a guy with a damaged foot.
...and he is known for getting close to the fighting. ...and the Russians in that trench didn't seem to expect to be attacked right then - such that a limpy war reporter with a reputation for getting close the fighting might feel it was safe enough, only to be wrong.
Wargonzo one of the more prominent Russian "milbloggers". If that's him (plausible but I'm not yet convinced), this is quite a coup.