David Stirling was a British Army officer known for founding the Special Air Service (SAS) during World War II. Born on November 15, 1915, he played a crucial role in developing unconventional warfare tactics, which emphasized small, highly trained units conducting surprise attacks behind enemy lines. Stirling's innovative strategies significantly impacted military operations, leading to the SAS becoming one of the most elite special forces in the world. After the war, he continued to serve in various military roles and was recognized for his contributions to modern warfare before passing away on November 4, 1990.