Martin King is an acclaimed Emmy Award–winning British historian and author of twelve published titles who has lived in mainland Europe since 1981. He speaks German, Dutch, Italian, Latin, and French. In frequent demand as a public speaker, he has lectured at many universities and schools along with British and US military bases throughout the world. In 2005, the History Channel hired Martin as their historical consultant on the acclaimed series Cities of the Underworld, and in 2007 he became the historical consultant and writer on the hit series Greatest Tank Battles, which is still one of the most-watched military documentary series ever made. Shortly thereafter, he accepted an invitation to work as a presenter on an episode of the series Narrow Escapes with British Academy of Film Award (BAFTA)–winning documentary makers, WMR.

In 2014, Martin became the executive producer and appeared in the Emmy Award–winning documentary titled Searching for Augusta: The Forgotten Angel of Bastogne. The renowned documentary is currently being screened across America on PBS and Netflix.

He has been received at the Pentagon, West Point Military Academy, Valley Forge, and the US Embassy in Brussels. His campaign work for World War II veterans recently led to the US military personnel who presented him with a "Services to Education" certificate at Joint Base USAF Fort McGuire-Lakehurst-Dix in New Jersey. The local municipality recently made Martin an honorary citizen for his work with war veterans and elected him as a "European Cultural Ambassador."