▁pla que ▁attached . ▁Some ▁ru ins ▁remain , ▁including ▁a ▁number ▁of ▁sent ry ▁posts , ▁some ▁found ations ▁and ▁a ▁small ▁tunnel , ▁which ▁led ▁from ▁the ▁camp ▁command ant ' s ▁house ▁to ▁the ▁inside ▁of ▁the ▁camp . ▁The ▁command ant ' s ▁house ▁was ▁later ▁moved ▁to ▁another ▁part ▁of ▁the ▁island . ▁ ▁It ▁was ▁built ▁by ▁the ▁Organisation ▁Tod t ▁( OT ) ▁in ▁January ▁ 1 9 4 2 ▁by ▁and ▁for ▁their ▁forced ▁labour ers ▁who ▁would ▁be ▁employed ▁in ▁building ▁fort ifications ▁including ▁b unk ers , ▁gun ▁emp lac ements , ▁air - raid ▁sh el ters ▁and ▁t unn els . ▁ ▁Sy lt ▁camp ▁held ▁Jewish ▁enfor ced ▁labour ers . ▁The ▁prisoners ▁in ▁L ager ▁Sy lt ▁and ▁L ager ▁N order ney ▁were ▁slave ▁labour ers ▁forced ▁to ▁build ▁the ▁many ▁military ▁fort ifications ▁and ▁install ations ▁throughout ▁Ald er ney . ▁N order ney ▁camp ▁hous ed ▁European ▁( us ually ▁Eastern ▁but ▁including ▁Republican ▁Sp ani ard ) ▁and ▁Russian ▁enfor ced ▁labour ers . ▁ ▁The ▁L ager ▁Sy lt ▁command ant , ▁Karl ▁T iet z , ▁had ▁a ▁black ▁French ▁colonial ▁as ▁an ▁under ▁officer . ▁Sho ck ed ▁to ▁see ▁a ▁black ▁man ▁be ating ▁up ▁white ▁men ▁from ▁the ▁camp , ▁a ▁German ▁naval ▁officer ▁threatened ▁to ▁shoot ▁him ▁if ▁he ▁saw ▁him ▁doing ▁it ▁again . ▁T iet z ▁was ▁brought ▁before ▁a ▁court - mart ial ▁in ▁April ▁