In the war, both armies researched advancement in the development of battlefield recovery techniques. In the Union, a new medicinal wing was created under the jurisdiction of a “Medical Director of the Army”, the first field hospitals, small tents with a few tables or beds for the wounded, were developed, and a system of transport of the wounded to general hospitals was created, the first wooden ambulances which could hold up to around 4 wounded laying down, 1 or 2 medical officials, and a driver for the horses. The Confederacy advanced mainly by learning from Union camps they overtook, but generally had a less established medical service largely as a result of its more limited resources, vast rural areas, limited medicinal knowledge, and fewer medical professionals. The most common battle