He was a man of fine intelligence, great earnestness, quick perception, and could make his dispositions as quickly as any officer, under difficulties where he was forced to act.

But I had before discovered a defect which was beyond his control, that was very prejudicial to his usefulness in emergencies like the one just before us.

He could see every danger at a glance before he had encountered it.
He would not only make preparations to meet the danger which might occur, but he would inform his commanding officer what others should do while he was executing his move.
I had sent a staff officer to General Sheridan to call his attention to these defects, and to say that as much as I liked General Warren, now was not a time when we could let our personal feelings for any one stand in the way of success; and if his removal was necessary to success, not to hesitate.

It was upon that authorization that Sheridan removed Warren.

I was very sorry that it had been done, and regretted still more that I had not long before taken occasion to assign him to another field of duty.
It was dusk when our troops under Sheridan went over the parapets of the enemy.