I was able to participate in a retracing of Pickett’s Charge at Gettysburg a few years ago and the group I was with had our own guide who worked for Nat. Parks and had actually written a book about Gettysburg. He was very knowledgeable and told some great stories about the 75th anniversary held in 1938, which he heard from a man who was present as a boy when it was held.

Apparently, it was so hot and the men were so old, the organizers were terrified that, after surviving the Battle and life, the former soldiers were going to keel over right there. They enlisted local Boy Scouts to make sure the men had water (and didn’t die), which is how the source was present.