US Soldier killed at the Fetterman Massacre. Pvt Aarons served with Company C, 18th US Infantry. Aarons was killed at the Fetterman Massacre. Soldiers killed with Fetterman were first buried at Ft Phil Kearny. After the fort closed, post burials were moved in 1905 to the Custer Nat'l Cemetery. Fetterman's men were buried in graves marked Unknown and are numbered 15-49 & 108-144.