There is a terrific scene in the movie “Gettysburg” where Union Colonel Joshua Chamberlain (played by the less than sane Jeff Daniels) is in command of Little Round Top on Day 2 at Gettysburg. The Rebels have been coming up the hill at them all day, and Chamberlain’s Maine regiment is out of ammunition. But they have been instructed they cannot abandon that position, or the entire Union line will cave in and the South will win. As the Confederates prepare another assault, Chamberlain convenes a council with his commanders and concludes they can’t shoot, and they can’t run. So...