Ernst Julius Günther Röhm (28 November 1887 – 1 July 1934) was a German military officer and a leading member of the Nazi Party. Initially a close friend and early ally of Adolf Hitler, Röhm was the co-founder and leader of the Sturmabteilung (SA), which played a significant role in Hitler's rise to power. He served as chief of the SA from 1931 until his murder in 1934 during the Night of the Long Knives.