Here is a picture showing what the CCC used them for in reality:
CCC (Civilian Conservation Corps) boys and trucks were used to help some of the families move out of the area being taken over by the Army in Caroline County, Virginia.
Source: http://www.loc.gov/rr/print/catalog.html
Digital ID: fsa 8c06174 Source: intermediary roll film
Reproduction Number: LC-USF34-044831-D (b&w film neg.)
Repository: Library of Congress Prints & Photographs Division Washington, DC 20540