The 1st SS Panzer Division Leibstandarte SS Adolf Hitler or SS Division Leibstandarte, abbreviated as LSSAH (), began as Adolf Hitler's personal bodyguard unit, responsible for guarding the Führer's person, offices, and residences. Initially the size of a regiment, the LSSAH eventually grew into an elite division-sized unit during World War II. The LSSAH participated in combat during the invasion of Poland, and was amalgamated into the Waffen-SS together with the SS-Verfügungstruppe (SS-VT) and the combat units of the SS-Totenkopfverbände (SS-TV) prior to Operation Barbarossa in 1941. By mid-1942 it had been increased in size from a regiment to a Panzergrenadier division and was designated SS Panzergrenadier Division "Leibstandarte SS Adolf Hitler". It received its final form as a Panzer division in October 1943. Members of the LSSAH perpetrated numerous atrocities and war crimes, including the Malmedy massacre. They killed an estimated 5,000 prisoners of war in the period 1940–1945, mostly on the Eastern Front. Early history (1923–1933) In the early days of the Nazi Party, the leadership realized that a bodyguard unit composed of reliable men was needed. Ernst Röhm formed a guard formation from the 19.Granatwerfer-Kompanie; from this formation the Sturmabteilung (SA) soon evolved. Adolf Hitler in early 1923, ordered the formation of a small separate bodyguard dedicated to his service rather than "a suspect mass", such as the SA. Originally the unit was composed of only eight men, commanded by Julius Schreck and Joseph Berchtold. It was designated the Stabswache (staff guard). The Stabswache were issued unique badges, but at this point was still under SA control. Schreck resurrected the use of the Totenkopf ("death's head") as the unit's insignia, a symbol various elite forces had used in the past, including specialized assault troops of Imperial Germany in World War I who used Hutier infiltration tactics. In May 1923, the unit was renamed Stoßtrupp (Shock Troop)–Hitler. The unit numbered no more than 20 members at that time. On 9 November 1923, the Stoßtrupp, along with the SA and several other Nazi paramilitary units, took part in the abortive Beer Hall Putsch in Munich. In the aftermath, Hitler was imprisoned and his party and all associated formations, including the Stoßtrupp, were disbanded. In the mid-1920s, violence remained a large part of Bavarian politics. Hitler was a potential target. In 1925, Hitler ordered the formation of a new bodyguard unit, the Schutzkommando (protection command). The unit was renamed the