Whakakiia te rerenga e whai ake nei: I te 22 o Pipiri, ka tīmata te whakaekenga a Tiamana ki te Soviet Union, Operation Barbarossa. I te 27 o Pipiri, kaore he korero pono a te Red Army General Staff mai i te Rohe Hau Hau Motuhake o Belorussian. Hei whakamarama i te ahuatanga, ka rere a Ivanov i roto i te Ilyushin Il-4 i te taha o nga kaiwhaiwhai e rua ki te whakatau ki te rangatira o mua a Dmitry Pavlov. I muri i te rere i runga i nga pou perehi Tiamana e rua, ka tau te rererangi a Ivanov ki te tari matua o te 3rd Long-range Bomber Aviation Corps. I te 29 o Hurae, i rere atu tana rererangi ki te rapu i te tari matua o Pavlov engari i werohia. I whara a Ivanov me te roopu i nga whiu, a ka nekehia atu ia ki Moscow mo te maimoatanga. Whai muri i tana wehenga mai i te hohipera, i whakaako ia i te Frunze Military Academy me te whai waahi ki te tiaki i Moscow, me te awhina ki te whakaara i nga pa kaha tata ki Poklonnaya Hill i te marama o Hepetema. I whakawāteatia ia me te whare wānanga ki Āhia ki Waenganui. I te Poutu-te-rangi 1942, ka noho a Ivanov hei rangatira mo te 24th Rifle Corps, he waahanga o te 60 Army. I whawhai ia i te Pakanga o te Dnieper i te marama o Hepetema 1943. Mo ana mahi i te pakanga, i whakawhiwhia a Ivanov ki te Order of the Red Banner i te 20 o Hepetema. Kātahi ka whawhai ia i te
Te Pakanga o Kiev.