A year ago, I heard from a cousin, that four Cady brothers had gotten into a gunfight with a Army Lieut, and Sergeant. I have never been able to find any record of this.
But, the possible timeframe would be after 1875 and before 1900. As the Sergeant was black, they would have been in the 9th or 10th Calv. In looking, James was married in 1869 and he moved to New Mexico in 1888. Benjamin did not have four son's. Only Joseph Daniel had that many son's. He lived in LLano Co,TX with Benjamin and James. There other brothers are accounted for, except William who died in 1855 in La Grange.
None of Joseph Daniels son's never married and at least two died young. JD and James served in the Confederate Army. But, the gun fight probably had nothing to do with reconstruction only self defense.