Original: The Night of the Long Knives ( German : ) or '' Operation Hummingbird '' , or , more commonly used in Germany '' Röhm - Putsch '' was a purge that took place in Nazi Germany between June 30 and July 2 , 1934 , when the Nazi regime carried out a series of political executions .
Simplified: The Night of the Long Knives ( German : ) or '' Operation Hummingbird '' ( ) , was a purge that took place in Nazi Germany between June 30 and July 2 1934 , when the Nazi regime executed at least 90 people for political reasons .