I remember reading about casualties per round fired on the "Battle Road" the British took on their retreat from Concord and Lexington back to Boston in 1775. It was the first time I realized how many rounds had to be fired to kill or wound an enemy soldier.
The estimates of the amount of lead thrown on the Battle Road are truly astounding. I think I saw the data in Hackett's "Paul Revere's Ride" written in 1995 (wow, can it REALLY be 25 years ago??).
Apropos of nothing in particular except the word “ago”, I was thinking the other day that in 20 years, Pearl Harbor will be 100 years “ago”, just like the Civil War was when I was growing up.