Nuremberg Rally
From 1933 to at least 1938 in Nazi Germany, before any official swastika flag went into use, it had to be put into a ceremony where it touched the "Blutfahne" or Blood flag, the swastika flag used by Nazi paramilitaries during the failed Beer Hall Putsch in 1923. This lengthy ceremony took place at every Nuremberg Rally. It is unknown whether this tradition was continued after the last Nuremberg rally in 1938.