Kammala jumla mai zuwa: An sanya Roberts a matsayin mai kula da sojojin ƙasa don
mamayar da aka yi a kan Dieppe, a ranar 19 ga Agusta, 1942. Kwamandansa ya kasance a cikin jirgin, kuma saboda rashin sadarwa ba shi da masaniya yadda sojojinsa ke gudanarwa, har sai sun kira jirgin ruwa don kwashewa nan da nan. An soki Roberts saboda ba dole ba ne ya sanya sojojinsa na ajiya (Les Fusiliers Mont-Royal) kuma ba da gangan ya kara yawan wadanda suka mutu. An cire shi daga umurninsa watanni shida bayan haka. Ya kasance aikin da Roberts ya yi a lokacin yakin basasa mai suna Operation Spartan a watan Maris na 1943 maimakon Dieppe, wanda ya kawo karshen aikin Roberts. Janar Harry Crerar ya tsawata wa Roberts saboda rashin daidaitawa tsakanin bindigogi da bindigogi na 2 a lokacin Wasannin Spartan na Spartan, kuma Roberts ya kasa samun sojojin da za su tono bayan kama gadar gada duk da cewa yana da wadataccen lokaci don yin hakan. Bayan Operation Spartan, an yanke hukuncin Roberts ba shi da cancanta don gudanar da umurnin yaƙi. An tura shi zuwa umurnin raka'a masu ƙarfafawa a Ƙasar Ingila kuma bai sami ƙarin umarnin aiki ba. Daga baya ya yi ritaya zuwa Channel Islands inda ya mutu a 1962.