March 30, 2017 17:42 Updated Follow There are many theories about this. Read "What is a Hoosier?" for an overview of the theories that had been put forth by the mid-1980s. A revised list that incorporates more recent scholarship on the topic is in the works. Related articles How many Hoosiers fought in the Civil War, World War I, or World War II? What is an ombudsman? Where can I buy an annual pass to state parks and reservoirs? What should I do if I find an injured or baby animal? Can I visit the observation level of the Soldiers & Sailors Monument?