Rubuta ci gaba ga wannan sakin layi - A ranar 19 ga Nuwamba, an sauya Eden zuwa Babban Jami'in Janar a matsayin Babban Jami'in Janar na 3 (GSO3), tare da mukamin dan lokaci na kyaftin. Ya yi aiki a HQ na Army na biyu tsakanin tsakiyar Nuwamba 1917 da 8 Maris 1918, ya rasa aiki a Italiya (kamar yadda aka tura sashen na 41 a can bayan da aka ci sojojin Italiya na biyu a yakin Caporetto). Eden ya koma Yammacin Yamma a matsayin babban harin Jamus
ya kasance a bayyane yake, kawai don tsohon rundunarsa za a rushe don taimakawa wajen sauƙaƙe ƙarancin ma'aikata na sojojin Birtaniya. Kodayake David Lloyd George, sa'an nan firaministan Birtaniya, yana daya daga cikin 'yan siyasar da Eden ya ruwaito sojojin da ke gaba suna magana sosai, ya rubuta wa' yan uwansa (Disamba 23, 1917) a cikin rashin jin daɗi a kan "jira da ganin ba'a" a cikin ƙi yarda da fadada aikin soja zuwa Ireland.