It may be that the Railroad Hospital was a temporary facility established on the initiative of Walker's Division, rather than a District-authorized facility. That would account for the absence of any records of surgeons being assigned to duty there. If it was a division initiative, the regimental surgeons could have been detailed for temporary duty there. That could have been handled by division or brigade orders, not district orders. It would also follow the pattern of a so-called "camp hospital," which was usually nothing more than a tent or a commandeered civilian building, staffed by a regimental surgeon and hospital steward, assisted by soldiers detailed as nurses.