Someone had asked me a few weeks ago if I knew the strength of the two companies from the 4th US Cavalry which served with the Army of the Potomac through the winter of 1862-1863. I’m pretty sure the question was intended specifically for the Antietam campaign, but can’t for the life of me remember who it was that asked. A bit of poking around last weekend (while looking for something else, naturally) turned up the following extracts from Army of the Potomac returns:
March 31, 1862
Present for duty: 4 officers, 104 enlisted men
Aggregate present: 113
Aggregate present and absent: 145
(OR, Ser I, Vol 11, Pt II, pg 53)
June 20, 1862
Present for duty: 4 officers, 101 enlisted men
Present for duty, equipped: 102
Aggregate present: 111
Aggregate present and absent: 144
(OR, Ser I, Vol 11, Pt III, pg 238)
July 10, 1862
Present for duty: 4 officers, 99 enlisted men
Present for duty, equipped: 100
Aggregate present: 109
Aggregate present and absent: 143
(OR, Ser I, Vol 11, Pt III, pg 312)
August 10, 1862
Present for duty: 5 officers, 125 enlisted men
Present for duty, equipped: 127
Aggregate present: 150
Aggregate present and absent: 231
(OR, Ser I, Vol 11, Pt III, pg 367)
Regular Cavalry in the Civil War 
Great Blog Don, and thank you for the info on the regulars. I have already posted the names to the list on the Schuylkill County Mil blog. I have a big interest in two regulars that served in the 5th. Ed Lieb and Bernard Reilly, Reilly post war though. I have some nice letters Lieb wrote to our newspaper “Pottsville Miners Journal”during the war also.Once again thank you and I have linked your site on my blog.Stu