Born on 31 October 1895, Sir Basil Henry Liddell Hart, commonly known throughout most of his career as Captain B.H. Liddell Hart, was a British soldier, military historian and military theorist who was known for his advocacy of mechanized warfare. Having enlisted in the Army in 1914, Liddell Hart served on the Western Front, being wounded on a number of occasions. Participating in the Battle of the Somme, he was hit three times without serious injury before being badly gassed and sent out of the line on 19 July 1916. The experiences Liddell Hart endured in the trenches profoundly affected him for the rest of his life. He passed away on 29 January 1970 aged 74.