Generate a question which can yield the answer mentioned in the input. Generated question must be answered by the answer provided in input, without using any extra knowledge.

Context : Salaria Kea O'Reilly (born 13 July 1917 in Milledgeville, Georgia -- died 18 May 1990 in Akron, Ohio) was an American nurse and desegregation activist who volunteered in both the Spanish Civil War and the Second World War.
Answer : Spanish Civil War
What war did Salaria Kea participate in?