Whakaotihia te rerenga e whai ake nei: I muri i tana haerenga ki tawahi, ka hoki a Roelfzema ki te Whare Wānanga o Leiden ki te haere tonu i ana akoranga. I te pakarutanga o te pakanga ki Uropi i te marama o Hepetema, 1939, i whakaaro a Roelfzema me ona hoa akonga ka noho motuhake a Holland pera i te Pakanga Tuatahi o te Ao. I te wā o te Soviet Union
I whakaekehia a Finland i Whiringa-a-rangi i haere ia ki reira ki te hipoki i te pakanga, e mahi ana hei kairipoata pakanga mo te, te me te. I muri mai ka tuhia e ia he pukapuka mo taua mea, ko te taitara (The Smoldering Fire).