This article concludes a series of three articles. The first two, published in 2022, were divided into time periods; 1) until 1989, and 2) since the 1990s. The present one discusses the issue of the fate of police officers after September 1, 1939, and includes a summary and research postulates. The timelines used in the series are not accidental, of course, as they had a significant impact on the way historiography devoted to public security organs was conducted in the interwar period. The literature that deals with pre‑war police is relatively rich in terms of quantity. However, it is worth examining it more carefully as several works raise a number of questions and doubts. Next to very good ones there are some that should not have been published. If we take a closer look at the style of narration in particular publications, we will notice that the authors in the vast majority limit themselves to describing and reporting facts, avoiding factual analysis. Many of the publications deviate from scientific standards, focusing their attention exclusively on creat-ing the preferred image of the public security organisation in a given period of time. Unfortu-nately, this is noticeable not only before 1989, but also later, when the negative image of the pre‑war police was replaced by its excessive glorification or even mythologisation. Despite the fact that more and more issues are raised and some of them are further developed, we still cannot consider the state of research that I am interested in as being satisfactory. The following issues still need to be highlighted and thoroughly investigated: 1) police biography; 2) issues of formation, socialisation and mentality; 3) the state of morale of the police corps; 4) participation in the Polish‑Soviet war; 5) participation in ensuring the internal security of the state; 6) police‑society relations, including the creation of the image of the police in culture texts; 7) police participation in the protection of state dignitaries; 8) international police co-operation; 9) the history of the police in the individual provinces; 10) women’s police service; 11) the functioning of police associations and cultural and educational activities; 12) war pre-parations; 13) the fate of police officers after September 1, 1939.