Kammala jumla mai zuwa: Bayan barkewar yaki da Japan, Allen ya koma Australia a watan Maris na 1942, kuma a watan Agusta ya dauki nauyin ayyukan da aka yi wa Japan.
Jafananci sun ci gaba a kan Kokoda Track. Kodayake ya yi nasara, Allen duk da haka ya zo ne a karkashin abin da mutane da yawa suka yi la'akari da zargi mara kyau daga kwamandan Allied a yankin Kudu maso Yammacin Pacific, Janar Douglas MacArthur na Amurka da kwamandan sojojin kasa na Allied, Janar na Australiya Sir Thomas Blamey, don yin jinkiri a bin Jafananci a fadin Owen Stanley Ranges. An cire shi daga umurninsa a ranar 29 ga Oktoba, 1942. Ƙananan alƙawura sun biyo baya, amma a watan Oktoba 1944, Blamey ya ba da shawarar Allen ya zama Knight Commander na Dokar Birtaniya, ko da yake Allen ba a taba nada shi ba.