" For centuries, even millennia, generals and governors, artists and poets had taken it for granted that soldiers fight. That if there’s one thing that brings out the hunter in us, it’s war. War is when we humans get to do what we’re so good at. War is when we shoot to kill. But as Colonel Samuel Marshall continued to interview groups of servicemen, in the Pacific and later in the European theatre, he found that only 15 to 25 per cent of them had actually fired their weapons. At the critical moment, the vast majority balked. One frustrated officer related how he had gone up and down the lines yelling, ‘Goddammit! Start shooting!’ Yet, ‘they fired only while I watched them or while some other officer stood over them’.14 The situation on Makin that night had been do-or-die, when you would expect everyone to fight for their lives. But in his battalion of more than three hundred soldiers, Marshall could identify only thirty-six who actually pulled the trigger. Was it a lack of experience? Nope. There didn’t seem to be any difference between new recruits and experienced pros when it came to willingness to shoot. And many of the men who didn’t fire had been crack shots in training. Maybe they just chickened out? Hardly. Soldiers who didn’t fire stayed at their posts, which meant they ran as much of a risk. To a man, they were courageous, loyal patriots, prepared to sacrifice their lives for their comrades. And yet, when it came down to it, they shirked their duty. They failed to shoot. "
― Rutger Bregman , Humankind: A Hopeful History