This inquiry leads students through an investigation about International Brigade volunteers during the Spanish Civil War. To do so, it relies on the digital history exhibit Stories from the Spanish Civil War, created by the Northern Arizona University (NAU) Martin-Springer Institute (MSI). Teachers can use this lesson in a middle or high school World History class during a unit on the Interwar Period or WWII, or in a US History class during a unit on the Great Depression, the Interwar Years, or WWII.