▁the ▁Cro at ian ▁Army ▁through ▁Bos nia ▁was ▁already ▁accepted ▁when ▁An te ▁Pav eli ć ▁ordered ▁the ▁army ' s ▁retre at ▁to ▁Sloven ia ▁( at ▁the ▁time ▁in ▁the ▁British ▁occupation ▁zone ). ▁ ▁Pre par ations ▁for ▁guer illa ▁war fare ▁began ▁in ▁ 1 9 4 3 ▁when ▁the ▁Germ ans ▁formed ▁the ▁Jag d verb ände . ▁These ▁form ations ▁used ▁the ▁same ▁tact ics ▁as ▁the ▁gu err illas ▁who ▁fought ▁against ▁them . ▁Staff ▁jobs , ▁that ▁is ▁planning , ▁log istic , ▁technical ▁work ▁and ▁training ▁were ▁performed ▁by ▁German ▁army ▁exper ts , ▁while ▁the ▁U sta še ▁provided ▁the ▁man power . ▁The ▁guer illa ▁units ▁were ▁named ▁S - Un its ▁( S ▁Sk up ine ). ▁Due ▁to ▁the ▁Italian ▁capit ulation ▁the ▁plan ▁was ▁implemented ▁in ▁ 1 9 4 4 , ▁and ▁in ▁ 1 9 4 5 ▁the ▁plan ▁included ▁the ▁whole ▁of ▁what ▁was ▁then ▁Cro at ian ▁territory . ▁Cro at ian ▁guer illa ▁actions ▁against ▁Y ug oslav ▁Part is ans ▁wer en ' t ▁notable ▁during ▁the ▁war ▁but ▁they ▁influenced ▁post - war ▁guer illa ▁combat . ▁Notable ▁people ▁who ▁worked ▁with ▁the ▁S - Un its ▁were ▁V je k oslav ▁Lub uri ć , ▁L jub o ▁Mil o š ▁and ▁D ink o ▁Š aki ć . ▁ ▁Reg ard less , ▁the ▁majority ▁of ▁the ▁Ar med ▁Forces ▁of ▁the ▁Independent ▁State ▁of ▁Cro atia ▁and ▁a