The relations between the prosecutors in Olsztyn’s Court of Appeal to information deriving from the public administration, are an interesting source for understanding socio-economic and political development in the first years after the War in Warmia and Mazury. This article presents the activities of the militia from Olsztyn province and several counties belonging to the province of Białystok. The opinion of the prosecutors of Olsztyn’s Court of Appeal concerning the attitudes of officers, their morale, level of education and training for service are presented. Alongside the opinions of the prosecutors concerning the functionaries, especially from the investigate division, the outlook of judges regarding the activities of the militiamen and their mistakes is presented.