High Quality Content by WIKIPEDIA articles! Ralph Alger Bagnold, OBE, FRS (3 April 1896 ? 28 May 1990) was the founder and first commander of the British Army's Long Range Desert Group during World War II. He is also generally considered to have been a pioneer of desert exploration, an acclaim earned for his activities during the 1930s. These included the first recorded east-west crossing of the Libyan Desert (1932). Bagnold was also a veteran of World War I. He held a degree in engineering. He laid the foundations for the research on sand transport by wind in his influential book The Physics of Blown Sand and Desert Dunes (1941), which is still a main reference in the field. It has, for instance, been used by NASA in studying sand dunes on Mars. He was a fellow of the Royal Society from 1944.