The following Federal cavalry regiments were listed among the "fighting 300" in COL William F. Fox's Regimental Losses in the American Civil War, 1861-1865; that is the 300 Federal regiments of all arms who experienced the worst losses in the war.
Combat Casualties - Officers and Men
1st Maine - 174
1st Michigan - 164
39th Indiana ("8th Cavalry") - 148
5th Michigan - 141
6th Michigan - 135
1st Vermont - 134
1st New York Dragoons (19th New York Cavalry) - 130
1st New Jersey - 128
2nd New York - 121
11th Pennsylvania - 119
8th New York - 105
10th New York - 102
7th Pennsylvania - 102
There were more than a few dead troopers. Before you laugh it helps to know what you're talking about.
Regards,
Don Dixon