...im as wearing. He was first aide-de-camp to Grant, then assistant adjutant-general and chief of staff. Behind Grant, who stands in the center with one hand thrust carelessly into his pocket, sits Lieutenant Frederick Grant , later major-general in the United States Army. In front of Grant stands Colonel M. B. Ryan, and on the extreme right sits Colonel Ely S. Parker, military secretary, who was a full-blooded Indian, ...