What is "blutfahne"

The Blutfahne , or Blood Flag, is the Nazi German hakenkreuz flag that was used in the failed Beer Hall Putsch in Munich, Germany on 9 November 1923, during which it became soaked in the blood of one of the SA members who died. It subsequently became one of the most revered objects of the Nazi Party. It was used in ceremonies in which new flags for party organisations were consecrated by the Blood Flag when touched by it.