Nyorai kuenderera mberi kweiyi ndima - Hederstedt akagadzwa mutungamiri webato reSweden UN Battalion yeUnited Nations Interim Force muRebhanoni (UNIFIL) muRebhanoni muna 1988. MuRebhanoni, Hederstedt akaita nhaurirano dzakawanda pamatanho akasiyana-siyana nemapoka akati wandei (semuenzaniso, PLO, PFLP, Hezbollah, Black September
, Amal, nezvimwewo uye mapato echitendero echiKristu aitsigirwa nevaIsraeri). Akanga ari mukuru mukuru weLife Guards Brigade (MekIB 1) paSvea Life Guards (I 1) muKungsängen kubva muna 1988 kusvika muna 1993. Pakati pa1989 na1992 Hederstedt akanga ariwo Mutungamiriri weChikoro cheUN Nordic Staff maofficial maofficial ane chokuita nehondo yehondo. Akaitawo nzendo dzokuwana chokwadi kunzvimbo dzine zvinetso, kusanganisira Cyprus, Kuwait, Iraq, Iran, uye Middle East (Israel, Gaza, uye Lebanon). Hederstedt akanga ari mukuru mukuru weWestern Army Division muSkövde kubva muna 1993 kusvika muna 1996. Hederstedt akasimudzirwa kuva mukuru mukuru muna 1996 uye akagadzwa kuva Mutungamiriri weInternational Operations kuSweden Armed Forces Headquarters.