I just had the wrath of the Red Cross get me twice actually while playing ARMA 3. Once for accidentally blowing up a whole squad of AI not realising they were stood so close to an explosive I planted (Of course, the other squad of Red Cross troops exacted swift vengeance), and a second time for actually shooting 2 isolated AI thinking I couldn't get shot since no one else was around, only to get mortared. I guess I am now a legit war criminal...if that ain't some brilliant sandbox gameplay then I don't know what is.