Thorne was the son of Augustus Thorne, a barrister, and Mary Frances Nicol.[3] His nephew, Patrick Campbell-Preston, was the husband of Dame Frances Campbell-Preston.[4][5]
For conspicuous gallantry and devotion to duty. When his battalion had captured its objective in an attack he organised the consolidation of the position and supervised the placing of strong points under very heavy fire. It was mainly through his excellent dispositions that the battalion maintained its position against heavy enemy counter-attacks. He showed great coolness and ability.[16]
Thorne was also awarded the Legion of Honour by the President of France in 1917,[17] and was promoted to acting lieutenant colonel in July that year as well.[18] In mid-October 1918 he became commander of the 184th Infantry Brigade and with it came the temporary rank of brigadier general. Just a month after his thirty-third birthday, he was one of the youngest generals in the British Army during the First World War.[12][19]
Germany officially surrendered in Norway on 8 May 1945, and Thorne arrived in Norway on 13 May together with Crown Prince Olav. He brought with him a small military force—one tenth the size of the German military presence—and so had to rely on cooperation with paramilitary forces from the Norwegian resistance movement. He cooperated closely with Jens Chr. Hauge.[24]
After the end of the war in Europe, German prisoners in Norway were reportedly forced to clear minefields under British supervision. The Germans complained to Thorne but he dismissed the accusations arguing that the Germans prisoners were not prisoners of war but "disarmed forces who had surrendered unconditionally." By 1946, when the cleanup ended, 392 were injured and 275 had died; this was contrary to the terms of the Geneva Conventions.[25] He formally held the sovereignty of Norway until 7 June, when Haakon VII of Norway returned from his exile. Thorne remained in charge of dismantling the German presence in Norway until he left the country on 31 October 1945.[24]
Lindsay, Donald (1987). Forgotten General: Life of Andrew Thorne. Salisbury: M. Russell. ISBN978-0-85955-137-3.
Mead, Richard (2007). Churchill's Lions: a biographical guide to the key British generals of World War II. Stroud (UK): Spellmount. ISBN978-1-86227-431-0.