In July 1941, the civil administration was declared in much of the occupied Soviet territories before one had materialised in the field. A power vacuum emerged which the SS filled with its SS and Police Leadership Structure, exercising unlimited power over security and policing which it gave up only grudgingly in the autumn when civil administration came into being; indeed Heinrich Himmler would use various tactics until as late as 1943 in unsuccessful efforts to regain this power. This partly explains the strained relations between the SS and the civil administration. In Ostland, matters were further complicated by the personality of the local superior SS officer Friedrich Jeckeln, attacked by the SS's opponents for his alleged corruption, brutality and mindless foolhardiness.