▁also ▁adopted ▁this ▁stand point : ▁In ▁the ▁first ▁instance ▁only ▁the ▁highest ▁authorities ▁were ▁to ▁be ▁issued ▁with ▁the ▁new ▁machine , ▁e . g . ▁OK W , ▁OK H ▁and ▁the ▁Army ▁groups , ▁and ▁only ▁gradually , ▁as ▁production ▁permitted , ▁was ▁the ▁Eng igma ▁machine ▁to ▁be ▁replaced ▁by ▁the ▁ 3 9 ▁at ▁Arm ies , ▁and ▁finally ▁perhaps ▁at ▁Army ▁Corps . ▁There ▁were , ▁during ▁ 1 9 4 3 ▁and ▁ 1 9 4 4 ▁between ▁the ▁various ▁H Q s ▁interested , ▁many ▁and ▁length y ▁discuss ions ▁and ▁arguments ▁for ▁and ▁against ▁the ▁introduction ▁of ▁the ▁ 3 9 ▁machine . ▁Special ▁wishes ▁of ▁the ▁Navy ▁had ▁to ▁be ▁taken ▁into ▁account . ▁The ▁industrial ▁firm ▁compla ined ▁of ▁lack ▁of ▁material ▁and ▁labour . ▁O wing ▁to ▁these ▁and ▁similar ▁difficulties , ▁development ▁stopped ▁altogether ▁at ▁one ▁time , ▁and ▁it ▁was ▁res umed ▁however . ▁At ▁any ▁rate ▁the ▁v ag uen ess ▁of ▁the ▁decis ive ▁authorities ▁was , ▁in ▁addition ▁to ▁difficulties ▁of ▁production , ▁the ▁chief ▁reason ▁why ▁the ▁machine ▁was ▁never ▁completed . ▁ ▁Bibli ography ▁ ▁References ▁ ▁Category : C rypt ographic ▁hardware ▁Category : Enc ryption ▁devices ▁Category : Mil it ary ▁communic ations ▁of ▁Germany ▁Category : World ▁War ▁II ▁military ▁equipment ▁of ▁Germany ▁Category : Sign als ▁intelligence ▁of ▁World ▁War ▁II ▁Category : Rot or ▁machines ▁Category : C rypt ography <0x0A> </s> ▁George ▁William ▁Arnold ▁from ▁the ▁National ▁Institute