"Lager Borkum" was near the centre of Alderney and was the smallest of the four camps. The "Borkum" and "Helgoland" camps were "volunteer" (Hilfswillige) labour camps and the labourers in those camps were treated harshly but marginally better than the inmates at the "Sylt" and "Norderney" camps. The prisoners in "Lager Sylt" and "Lager Norderney" were slave labourers forced to build the many military fortifications and installations throughout Alderney. "Sylt camp" held Jewish enforced labourers and was a death camp. "Norderney camp" housed European (usually Eastern but including Spaniard) and Russian enforced labourers. "Lager Borkum" was used for German technicians and volunteers from different countries of Europe. "Lager Helgoland" was filled with Russian Organisation Todt workers. (For further information on Alderney concentration camps, see "Appendix F: Concentration Camps: Endlösung – The Final Solution"; "Alderney, a Nazi concentration camp on an island Anglo-Norman";.