original_query: Who was the commander of the XXI Corps during World War I?
query: Who was the commander of the XXI Corps during World War I?
answer: Lt-Gen Sir Edward Bulfin commanded the XXI Corps from August 18, 1917 to November 1918.  Maj-Gen Sir Vere Fane and Maj-Gen Reginald Hoskins served as acting commanders for brief periods in 1918.