Combat is not all guts and glory.
9/10 times, the enemy is going to retreat and you merely secure the area, you don't go all Rambo and slaughter a village with a pickaxe. The average infantry E-5 Marine had killed less than 2 people. That's a real statistic.
I deployed multiple times to Afghanistan during my service and even as a machinegunner in the Helmund Province, the biggest shithole in Afghanistan, I only ever had to directly take the lives of 4 people. IED's are the biggest concern, not some unprotected fucker with an AK walking out in the middle of the road.
War is not what you see on tv. It's a job just like any other, and there are very few dramatic points to a deployment.