Nonetheless , many Hungarian officials argued for participation in the war in order to encourage Hitler not to favour Romania in the event of border revisions in Transylvania .
The invasion began on 22 June 1941 , but Hitler did not directly ask for Hungarian assistance .
Many Hungarian officials argued for participation in the war in order to encourage Hitler not to favour Romania in the event of border revisions in Transylvania .
The invasion began on 22 June 1941 , but Hitler did not directly ask for Hungarian assistance .