I te Mahuru 1944, i tangohia e Simonds mo te wa poto te mana o te First Canadian Army mai i Lieutenant-General Harry Crerar, i te whakaora mai i te mate o te mate, a ka arahi i te whakaoranga o te waha o te awa o Scheldt. "Na te nuinga o nga kaute, ko te whakapae a Simonds i te whakahau i whakaohooho i te HQ o te ope taua; i te mea i whakahaerehia e Crerar, i whakahau a Simonds". I te hokinga mai o Crerar ki te whakahau i te ope tuatahi, ka hoki ano a Simonds ki tana whakahau i te II Canadian Corps mo te whakaoranga o te raki-hauauru o Uropi
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