William F. Fox, Lt. Col. U. S. V., Regimental Losses in the American Civil War, 1861-1865: A Treatise on the extent and nature of the mortuary losses in the Union regiments, with full and exhaustive statistics compiled from the official records on file in the state military bureaus and at Washington

Custer's famous Cavalry Brigade, which sustained the highest percentage of loss of any brigade in the mounted service:--

the “star” Brigade — Heckman's.

Eighteenth Corps.

In each of these brigades there were, at times, slight changes, unnecessary to specify here, as they were but temporary arrangements; the brigades proper were organized as stated. Then there was the Maryland Brigade; the Second Jersey Brigade; the Eagle Brigade — Mower's, of the Sixteenth Corps,--which carried the live eagle; Wilder's Lightning Brigade, composed of mounted infantry; and several crack brigades whose total losses, as brigades, cannot well be stated, owing to the many changes in their organizations.

Here are three fine brigades, with rosters showing their organizations as they stood October 20, 1863, at the time the Army of the Cumberland was reorganized. The losses credited each regiment were incurred during their entire term of service, during which they served in other brigades and corps. These brigade organizations were not continuous and unchanged like those previously cited; they are mentioned in this connection becaust they were noted brigades.

Steedman's¹ (1ST) Brigade.

Sheridan's² (2D) Division, Fourth Corps.