Has anyone read this book by Lt. Colonel Dave Grossman? I started into it and it is one of the most interesting books I've read. Some of the things that are mentioned are that out of front-line soldiers in WWII, only 15-20% of them were able to actually bring themselves to fire directly at another human being, regardless of their own personal safety or the safety of their comrades. Others fell back to supportive roles such as tending the wounded and supplying ammunition to those who were firing. There are similar accounts of this during the Civil War. After battles, there would be thousands of rifles found that were unfired, or that had multiple rounds loaded up in the barrel. Soldiers would act like they were firing, and continue with the loading procedure, stacking bullets in their rifles. Others would simply fire over the enemy's heads. Also it talks about accounts of people that were able to bring themselves to shoot another human in battle, and how the physical and psychological effects were traumatic afterward. Apparently it's much easier for a bomber or artillery operator to "knowingly" kill hundreds, than it is for a front line soldier to shoot a man they can look in the face from 50 yds away. Thermal imaging systems on gunships are closing this gap though, they are becoming so advanced that gunners are no longer shooting at white blips on the screen, they can see the people in detail... this is causing hesitation and reluctance to fire whereas it wasn't a problem in the past. Thoughts?