▁against ▁each ▁other ▁and ▁keep ▁them ▁dependent . ▁The ▁normal ▁prisoner , ▁however , ▁was ▁at ▁the ▁mer cy ▁of ▁a ▁dual ▁authority , ▁the ▁SS , ▁who ▁often ▁hardly ▁seemed ▁to ▁be ▁at ▁the ▁camp , ▁and ▁the ▁prisoner ▁function aries , ▁who ▁were ▁always ▁there ." ▁— E ugen ▁K og on , ▁concentration ▁camp ▁surv iv or ▁ ▁See ▁also ▁ ▁B elsen ▁Tri al , ▁the ▁Tri al ▁of ▁Joseph ▁K ram er ▁and ▁ 4 4 ▁others ▁( former ▁kap os , ▁conv icted ▁in ▁late ▁ 1 9 4 5 ▁for ▁war ▁cr imes ) ▁ ▁Or li ▁Wald , ▁L ager äl test e ▁at ▁Aus ch witz , ▁called ▁the ▁" Ang el ▁of ▁Aus ch witz " ▁ ▁Robert ▁Sie wert , ▁kap o ▁at ▁Buch en wald ▁ ▁Further ▁reading ▁Rev ital ▁L ude wig - K ed mi , ▁Op fer ▁und ▁T äter ▁zug leich ? ▁Mor ald ile mm ata ▁j üd ischer ▁Fun ktion sh äft ling e ▁in ▁der ▁Sho ah . ▁Ps y che ▁und ▁Gesellschaft . ▁Book ▁expanded ▁from ▁a ▁doctor al ▁dis sert ation ▁about ▁the ▁moral ▁d ile m ma ▁faced ▁by ▁Jewish ▁kap os ▁in ▁the ▁Hol oca ust . ▁Psych os oz ial ▁Verlag , ▁G ie ßen ▁( 2 0 0 1 ) ▁ ▁Foot notes ▁ ▁References ▁ ▁External ▁links ▁Sebastian ▁D reg ger : ▁Die ▁Rolle ▁der ▁Fun ktion sh äft ling e ▁im ▁Vern ichtung sl ager ▁Aus