Out of the one hundred and 2 men in the Company that was directly surrounding him in the 32 survived. He was in the middle of the worst fighting and lost two horses in the same engagement.
So vicious was the charge he spearheaded that horses and riders were flung into the air from the impact of the collisions. He lost 219 in that charge 70 from the troops he was immediately leading.
This page “Mount Up!”: Cavalry Operations in the Gettysburg Campaign has a good account of the Union Cavalry during the battle.
All three newly minted Brigadier Generals see action - George Custer, Elon Farnsworth, and Wesley Merritt.
Farnsworth is killed in a charge.