Thomas Henry Wintringham was a British soldier, military historian, journalist, poet, Marxist, politician and author. He was a supporter of the Home Guard during the Second World War and was one of the founders of the Common Wealth Party.

The Home Guard was an armed citizen militia supporting the British Army during the Second World War. Operational from 1940 to 1944, the Home Guard had 1.5 million local volunteers otherwise ineligible for military service, such as those who were too young or too old to join the regular armed services and those in reserved occupations. Excluding those already in the armed services, the civilian police or civil defence, approximately one in five men were volunteers. Their role was to act as a secondary defence force in case of invasion by the forces of Nazi Germany.