I'm dredging up a memory here, but I think Fitzhugh Lee or maybe Rooney Lee, was forced, by Robert E. Lee to ride for 10 miles, with his father, (I'm unclear on which one was son/nephew) at the Dragoon Trot, which is NOT posting. It certainly, made, ahem, an impression on him, all those years later while writing a memoir. I think Bobby Lee felt it took some of the starch out of the "young uns." What ever the point was he was making, he certainly got it across. Robert E. Lee had a different saddle other than a McClellan or what was considered a very early Federal Ranger type - he had a comfortable plantation type saddle. The average CSA or Federal Cavalry soldier did not. So a sitting trot at a fast pace for 10 miles was pretty punishing.