A reproduction of a confidential cyclostyled list compiled by MIRS (London Branch) and issued by G-2 (Counter Intelligence Sub-Divison) of the Supreme Headquarters Allied Expeditionary Force in 1944. It attempted to compile the names, locations and pertinent data of confirmed, reported or alleged detention centres in Axis Europe which came within the elastic definition of the term “Concentration Camp”. The report covers camps in the Baltic States, Belgium, Bulgaria, Channel Islands, Danzig, Denmark, France, Germany, Greece, Holland, Hungary, Italy, Norway, Poland, Slovakia and Yugoslavia.