B. H. Liddell Hart was a British military historian and strategist, born on April 31, 1895, and died on January 29, 1970. He is best known for his contributions to military theory, particularly the concept of the "indirect approach," which emphasizes flexibility and maneuverability in warfare. His ideas influenced many military leaders and were applied in various conflicts throughout the 20th century. Liddell Hart served in both World War I and World War II, gaining firsthand experience that shaped his writings. He authored several influential books, including Strategy and The Ghost of Napoleon, which explored historical battles and military strategies. His work remains significant in the study of military tactics and history.