Presently reading "Hearts Touched By Fire", a Best-of articles by Civil War veterans from the Century Magazine in the 1880's.
In the article "General Lee In The Wilderness Campaign" by Charles Venable of Lee's staff, he lists the number of various combats on each day from May 5 to May 19, 1864 as totaling over 20 different actions for the period. Then comes this sentence:
"It is no wonder that on these fields the Confederate ordnance officers gathered more than 120,000 pounds of lead, which was recast as bullets and did work again before the campaign of 1864 was closed."

Okay....I don't know about you, but that's something that I had never considered; that the South was recovering captured and spent bullets, bolts and balls from the battlefields in order to supply their needs in 1864.
Ya learn something every day!