He fled to Sweden and was a part of the Communist Party leadership - in - exile there .
The encampment was raided by the German occupiers in Operation Almenrausch in June 1944 , but Halvorsen escaped .
Halvorsen fled to Sweden and was a part of the Communist Party leadership - in - exile there .
The encampment was raided by the German occupiers in Operation Almenrausch in June 1944 , but Halvorsen escaped .