 It was also, according to local historians, the site of the 1854 National Republican Party convention – the first convention of the Grand Old Republican Party, despite Pittsburgh's claims.Greensburg is home to the 14th Quartermaster Detachment, a United States Army Reserve unit.During the Gulf War, the unit took the heaviest casualties of any Coalition unit during the war when an Iraqi missile hit a US Army barracks in Dhahran, Saudi Arabia, on February 25 1991.