Detailed Instructions: In this task you will be given a text passage from a trivia quiz. You should choose the category this question belongs to from these categories: History, Science, Social Science, Fine Arts, Literature. You can only choose one category, so if in doubt, please choose the closest match.
Q: Two members of this group, William Hushka and Eric Carlson, were killed in a confrontation with the 12th Infantry and 3rd Calvary, while its second action the following year was more peaceful. Organized in support of the Putnam Bill, this group was led by Walter W. Waters, while retired general Smedley Butler was its most prominent supporter. Following the Senate's rejection of the Putnam Bill, Douglas MacArthur led a military campaign to clear this group from its campground in the Anacostia Flats. For 10 points, name this group of World War I veterans who marched on Washington in 1932 to demand early payment of after service compensation.
A:
History