DeLeon had little experience with military medicine, and he and his staff of twenty-five began creating plans to implement army-wide medical standards. The Confederate government appropriated money to purchase hospitals to serve the army, and the development of field services began after the First Battle of Manassas. The early hospitals were quickly overrun by wounded, and hundreds had to be sent by train to other southern cities for care following the battle. As a result of the poor planning, Davis demoted DeLeon and replaced him with Samuel Preston Moore. Moore had more experience than DeLeon and quickly moved to speed the implementation of medical standards. Because many of the surgeons in the regiments had been pressed into service, some were not qualified to be surgeons. Moore began reviewing the surgeons and replacing those found to be inadequate for their duties.