Marines Aided by Robotic Airplane in Iraq
A large decrease in the number of casualties will result in routine tasks (which are the easiest to attack) becoming automated, like autonomous offroad vehicles on supply missions. After the next Grand Challenge, I expect a rate of adoption that will completely eclipse that of robots today. I'm rooting for RedTeam.
Still, the hardest job with many casualties is urban warfare, which pretty much requires a robot that can operate in a restricted setting which humans find quite simple, but is a far harder task than off road driving. Note that even a tele-operated full solution would be very, very hard. It will be a while before we see something like this.