The National Defense Corps Incident was a death march that occurred between December 1950 and February 1951, during the Korean War, as a result of corruption.

A death march is a forced march of prisoners of war or other captives or deportees in which individuals are left to die along the way. It is distinguished from simple prisoner transport via foot march. Article 19 of the Geneva Convention requires that prisoners must be moved away from a danger zone such as an advancing front line, to a place that may be considered more secure. It is not required to evacuate prisoners who are too unwell or injured to move. In times of war, such evacuations can be difficult to carry out.