I'm reading John Herberich's Masters of the Field about the Fourth U.S. Cavalry (regulars). Herberich states that it was possible for an officer to have four ranks: permanent commission in the regulars, brevet rank in the regulars, commission in volunteer service and brevet rank in the volunteer service. So, while one could be a captain in the regulars, he could hold a brevet lt. col. as a regular, a commission as a brigadier general of volunteers and a brevet major general in the volunteers. However, per Herberich, he only receives a captain's pay. Can anyone confirm this? I think that if he was a brigadier general of volunteers commanding a division because of his brevet major-general rank, he would receive at least a brigadier general's pay. It wouldn't seem unfair that a colonel of volunteers or brigadier general of volunteers underneath him would receive more pay.