[1] During the Weimar Republic, Drechsler began the study of dentistry at the University of Rostock, and obtained the degree of Doctor of Dental Arts.

[1] He remained in the SA until the fall of the Nazi regime, advancing to the ranks of SA-Standartenführer in 1934, SA-Oberführer in 1936 and SA-Brigadeführer in 1942.

On 26 May 1933, Lübeck, together with both Mecklenburg-Schwerin and Mecklenburg-Strelitz, was placed under the authority of a National Governor (Reichsstatthalter) named Friedrich Hildebrandt who was also the Gauleiter in Mecklenburg-Lübeck.

[3] A leading co-worker in the Reich Ministry for the Occupied Eastern Territories (Reichsministerium für die besetzen Ostegebiete or RMfdbO), Otto Bräutigam, noted in his diary of having had a conflict with the military authorities.

Based on a settlement with RMfdbO, formal assignment of authority over the administration of Latvian territory, including Riga, was effected on 1 September 1941.

[4] In addition to his other positions, Drechsler was a member of the board of overseers of an industrial firm called Hochofenwerkes Lübeck AG.

Throughout the time that Drechsler was in Latvia, large numbers of massacres, particularly of Jews, were carried out by the Germans, together with substantial assistance from Latvian collaborators.