Question: What senior United States Army officer, born in September 1860, used United States Army Indian Scouts in 1916 on his expedition to Mexico?
Sentence (from "Robert Napier, 1st Baron Napier of Magdala"): He also served in the Second Opium War as commander of the 2nd division of the expeditionary force which took part in the Battle of Taku Forts in August 1860, the entry to Peking in September 1860 and the destruction of the Old Summer Palace in October 1860.
Relevant evidence: No