ARMISTEAD, LOUIS ADDISON, General, C.S.A.. Half-length albumen portrait in a United States Army Uniform. 4.1/8 x 2 in., contemporary mount. Armistead's promising career was cut short at the Battle of Gettysburg. It was he who fell dead over the muzzle of Alonzo Cushing's cannon which had been wheeled down to the stone wall as Picket's infantry moved forward.