Stonewallers are people who are known for their resistance to change or progress. The term is derived from the Battle of Bull Run in the American Civil War, where Confederate General Thomas 'STONEWALL' Jackson held off Union forces. The two crossword solutions that relate to this term are MASONS (6 letters) and REBS (4 letters). MASONS refers to the Freemasons, a fraternal organization that was popular among Confederate soldiers during the Civil War. REBS is an abbreviation for Rebels, which was the nickname given to Confederate soldiers.