The Sanitary Commission, at the request of the army, created the
Hospital Transport Service. It acquired 16 medium and large boats and converted them to hospital ships. Its first major operations came in the Peninsular Campaign of spring 1862, when it serviced casualties from General McClellan's Army of 100,000 men after a series of battles. The Sanitary Commission quickly organized large fleets of ships and created a network system of routes to move wounded. Rivers and ocean connecting the Union became highway over which the wounded steadily traveled further North. When possible, few embarkation points were used. Ships were assigned schedules and maximum patient allowances. If a ship embarked more patients than allowed, even though space permitted, her crew would be required to notify the receiving station. Several ships were kept in reserve, used only when another ship was unable to continue to make a journey. Thus a very predictable and organized system grew. On the
Pamunkey River, 19 hospital transports working on a fixed schedule moved 700 wounded a day. Of particular interest, the ships had far greater capacity, some 600 more wounded could have been crammed onto some of the ships. But, this was frowned upon by the organizers as such a number would overcrowd the ship, overtask the medical staff, erode the quality of care, and place an unexpected burden on the receiving hospital. Thus, in theory some 70,000 wounded could be moved from Virginia in 100 days to hospitals in five states as far north as New York. A second inland force of about 16 hospital ships moved patients along riverways north to Missouri, Ohio, and Kentucky.
Hospital ships and boats of the Peninsula Campaign ==Hospital boats of the Sanitary Commission==