Local participation in the Holocaust

Konrāds Kalējs (26 June 1913 – 8 November 2001) was a Latvian soldier who was a Nazi collaborator and an alleged war criminal during World War II. He gained notoriety for evading calls for his prosecution across four countries, more than once under the threat of deportation.

Reserve Police Battalion 33, "Ostland", (German: Polizei-Bataillon 33, also: Polizei-Bataillon "Ostland") was a militarised unit of the German Ordnungspolizei (uniformed police) in World War II. For the first three months between August and October 1941 – according to Latvian Museum of Occupation – its official name was Police Reserve Battalion "Ostland" (Polizei-Reserve-Bataillon "Ostland") and, from October 1941, the 33rd Reserve Police Battalion (Reserve-Polizei-Bataillon 33). The 1st Company of Battalion 33 was known as Ostlandkompanie. It was composed largely of Estonian Volksdeutsche.

Schutzmannschaft-Brigade Siegling (also German: Schutzmänner-Brigade Siegling; lit. 'Siegling's Auxiliary Police Brigade') was a Belarusian Auxiliary Police brigade formed by Nazi Germany in July 1944 in East Prussia, from six auxiliary police battalions (60th and 64th Belarusian and the 57th, 61st, 62nd and 63rd Ukrainian) following the Soviet Operation Bagration.

The Nachtigall Battalion (English: Nightingale Battalion), also known as the Ukrainian Nightingale Battalion Group (German: Bataillon Ukrainische Gruppe Nachtigall), or officially as Special Group Nachtigall (German: Sondergruppe 'Nachtigall') was a subunit under command of the German Abwehr special-operations unit Lehrregiment "Brandenburg" z.b.V. 800 in 1941. Along with the Roland Battalion it was one of two military units which originated on February 25, 1941, when the head of the Abwehr, Admiral Wilhelm Franz Canaris, sanctioned the formation of a "Ukrainian Legion" under German command. The Legion was composed of volunteer Ukrainians many of whom were members or supporters of Organization of Ukrainian Nationalists (OUN-B). The Battalion participated in early stages of Operation Barbarossa (the Axis invasion of the Soviet Union) with Army Group South between June and August 1941.

The Blue Police (Polish: Granatowa policja, lit. Navy-blue police), was the police during the Second World War in the General Government area of German-occupied Poland. Its official German name was Polnische Polizei im Generalgouvernement (Polish Police of the General Government; Polish: Policja Polska Generalnego Gubernatorstwa).

Selbstschutz (German: Self-protection) is the name given to different iterations of ethnic-German self-protection units formed both after the First World War and in the lead-up to the Second World War.

The Lithuanian Activist Front or LAF (Lithuanian: Lietuvių Aktivistų Frontas) was a Lithuanian underground resistance organization established in 1940 after the Soviets occupied Lithuania. Its goal was to free Lithuania and regain its independence. The LAF planned and executed the June uprising and established the short-lived Provisional Government of Lithuania, which disbanded after a few weeks. The Nazi authorities banned the LAF in September 1941. Its role in the three World War II invasions of Lithuania and the massacre of 95% of Lithuania's Jewish population remains ambiguous and the topic of conflicting information and opinion.

The Last Jew in Vinnitsa is a photograph taken during the Holocaust in Ukraine showing a Jewish man near the town of Vinnitsa (Vinnytsia) about to be shot dead by a member of Einsatzgruppe D, a mobile death squad of the Nazi SS. The victim is kneeling beside a mass grave already containing bodies; behind, a group of SS and Reich Labour Service men watch.

Viktors Arājs (13 January 1910 – 13 January 1988) was a Latvian/Baltic German collaborator and Nazi SS officer, who took part in the Holocaust during the German occupation of Latvia and Belarus (then called White Russia or White Ruthenia) as the leader of the Arajs Kommando. The Arajs Kommando murdered about half of Latvia's Jews.

The Arajs Kommando (Latvian: Arāja komanda; German: Sonderkommando Arajs) was a paramilitary unit of the Sicherheitsdienst (SD) active in German-occupied Latvia from 1941 to 1943. It was led by SS commander and Nazi collaborator Viktors Arājs and composed of ethnic Latvian volunteers recruited by Arājs.