Whakaotihia te rerenga e whai ake nei: I te tau 1915, i riro ia hei rangatira mo te ope taua o te Bug me te rangatira o Heeresgruppe Linsingen i te wa kotahi. I te marama o Hune 1916, i anga atu tana Rōpū Rōpū ki te
Ko te whakaeke a Brusilov. Whai muri i te wehenga tuatahi, i tirotirohia e ia te whakaekenga o Ruhia i te Pakanga o Kowel. I whakatairangahia ia ki te Koronela-Tianara, te taumata tuarua mo te rangatira i roto i te Imperial German Army (4 whetu). I te tau 1917-1918 me te mea i muri i te hainatanga o te Tiriti o Brest-Litovsk, i arahi ia i te haerenga a Tiamana ki Ukraine.