Shays ' Rebellion was an armed uprising in Massachusetts (mostly in and around Springfield) during 1786 and 1787. Revolutionary War veteran Daniel Shays led four thousand rebels (called Shaysites) in rising up against perceived economic injustices by Massachusetts, and in a later attempt to capture the United States' national weapons arsenal at the U.S. Armory at Springfield. Although Shays' Rebellion met with defeat militarily against a privately-raised militia, it prompted numerous national leaders (including George Washington, who came out of retirement to deal with issues raised by Shays' Rebellion) to call for a stronger national government to suppress future rebellions, resulting in the U.S. Constitutional Convention and according to historian Leonard L. Richards, ""fundamentally altering the course of U.S. history.""Traditionally depicted as a revolt of poor farmers embittered by land seizures and bankruptcies, recent research into the lives of Shays Rebellion's participants suggests that Shaysites came from diverse socio-economic backgrounds, and from different professions and states. Research shows that the Shaysites' grievances extended beyond the specifics of Massachusetts' economic situation to issues like: rule by a faraway elite; cronyism and corruption in government; and regressive tax policy.