During General Tyler’s reconnaissance of Blackburn’s Ford on July 18, 1861, Captain Albert G. Brackett’s squadron of the 5th U.S. Cavalry suffered three casualties. Sergeant Rowan of Company G, Private Cook and another private from Company I whose name wasn’t recorded and were wounded. The extent of their injuries isn’t recorded, but none of the three died and all three later returned to duty. Eight horses were also killed in the skirmish.
Surprisingly, I was unable to find enlistment records for either Sergeant Rowan or Private Cook.
Source: George F. Price, Across the Continent with the Fifth Cavalry, pages 102 and 668.