Well, combat is disturbing and games that reinforce this message actually help to discourage us from war fighting, IMO. Let's keep it virtual!
Historically, surrendering in the heat of battle was very dicey and your chances of being shot out of hand were very high, on both sides. Representing this in the game isn't gratuitous, it's a sobering reminder of reality.
EDIT - I just saw above that it's crossfire...