[Windflier]

Based on the apparent age of the one-legged man on crutches at 2:20, it is probable he is a Civil War amputee.

It's possible, but he would have been in his sixties when the film was taken. The war had been over for forty six years in 1911.

[henkster]

When he is closest to the camera you get a good look at his face and the age seems about right. There were still plenty of them around 2 years later at the 50th Anniversary of Gettysburg.

https://youtu.be/mVjD2DaB4bY