
The portable surgical hospitals had been too light and under-equipped, while the field hospitals were not mobile enough and therefore an advancing army found that casualties needed to be transported over great distances before they could get proper treatment. It was an improvement to the system of portable surgical hospitals, field hospitals, and general hospitals used during World War II. DeBakey and other Army surgical consultants as the "mobile auxiliary surgical hospital".

Towards the end of World War II, the MASH concept was conceived by Michael E.

Army decommissioned the last MASH unit on February 16, 2006. The units were first established in August 1945, and were deployed during the Korean War where they proved to be highly successful. The term Mobile Army Surgical Hospital ( MASH) refers to a United States Army hospital capable of providing definitive surgery within a combat area of operations and yet mobile enough to keep up with advancing troops.
