On 20 June 1942, Kaaserer joined the
Waffen-SS as an SS-
Hauptsturmführer of
reserves and was sent to the
Balkans as commander of the 1st Battalion of the SS 2nd Mountaineer Regiment,
7th SS Volunteer Mountain Division Prinz Eugen. This division had been organized in 1941 from the ethnic Germans
(Volksdeutsche) living in the
Banat area but, despite its name, the majority of its recruits were not volunteers but
conscripts coerced into service. In October 1942, Kaaserer led his battalion in
Operation Kopaonik, an anti-
Chetnik campaign in which hundreds of
Serbian civilians in the village of
Kriva Reka were killed and their houses burned. He served with his unit until February 1943 when he was
court-martialed due to brutality and degrading treatment of recruits. He was transferred out of the division, charged before the
Supreme SS and Police Court in
Munich and received a severe reprimand from
Reichsführer-SS Heinrich Himmler. Dismissed from the Waffen-SS, Kaaserer was deployed for police duties, assigned to the staff of the Higher SS and Police Leader (HSSPF) in the Nazi
puppet state of
Croatia, SS-
Gruppenführer Konstantin Kammerhofer. He was appointed
Polizeigebeitsführer (Police Area Leader) of
Knin in
Dalmatia from 27 July 1943 to 20 May 1944. While in this post, he conducted anti-partisan operations in
Zagreb in September and October 1943. On 21 June 1944, Kaaserer was transferred to the office of the HSSPF "
Serbia,
Sandžak and
Montenegro," SS-
Gruppenführer Hermann Behrends. Kaaserer was promoted to SSPF "Sandžak," the only person to hold this position. His duties again largely involved internal security, anti-partisan and anti-
guerilla warfare. His last posting came on 28 November 1944 when he was transferred to the newly created post of SSPF "
Mitte-Norwegen" (Central Norway) in
Bergen which he held until the end of the war in Europe on 8 May 1945. After the cessation of hostilities, Kasserer was arrested and extradited to Yugoslavia. He was tried for war crimes by the Supreme Military Court in
Belgrade,
sentenced to death on 22 December 1946, and executed by
hanging on 24 January 1947. == Awards ==