Michael Crumplin is a retired consultant and general surgeon living in North Wales. Before and after retirement, he took an interest in the human aspects of conflict. He has written four books which focus on medicine and surgery, in both the Army and Royal Navy during the French wars (1792-1815). He has also written book chapters, many articles, and has, since 2000, delivered around 400 lectures. He was education lead for Waterloo200 and since 2015, with the generous support of a local businessman, has donated his medical collection and set up a unique museum of surgery in the farm used as the principal field hospital during the Battle of Waterloo at Mont St Jean.
