Rubuta ci gaba ga wannan sakin layi - An ba Synnergren mukamin jami'in da mukamin laftanan na biyu a 1939 kuma ya yi aiki a cikin Ski Battalion (I 19 K) a Kiruna a lokacin Yaƙin Duniya na II kuma ya tsare iyakar Norway lokacin da Jamus ta mamaye
Ƙasar Narvik. Bayan harin Jamus a kan Norway a ranar 9 ga Afrilu, 1940, a matsayin jami'in leken asiri a cikin ma'aikatan rundunar, a lokuta da yawa, shi kaɗai kuma a kan kankara, ya shiga yankin yaƙi a Arewacin Norway don yin hulɗa da sojojin Norway da kuma tattara bayanan sirri a cikin yankin da Jamus ta mamaye. Saboda kwarewarsa da kwarewarsa, ya zama, bayan ɗan gajeren lokaci a matsayin jami'in cadet a Karlberg a 1944, shugaban kwashewa a Jokkmokk kuma a matsayin haka yana da alhakin gudanar da 'yan gudun hijirar Norway. Bayan yakin, an nada shi kyaftin a 1946 kuma ya yi a cikin ɗan gajeren lokaci aikin soja mai sauri.