Tuhia he haere tonu mo tenei irava - I tukuna a Yenshin i te marama o Mei 1935 hei rangatira mo te 1st Kalevala NKVD Border Detachment i Ukhta i mua i tana noho hei rangatira mo te 37th NKVD Border Detachment i Batumi i te marama o Tihema 1937. I ako ia i te Order of Lenin Higher NKVD School i Moscow mai i te Oketopa 1939, engari i tukuna ki te Northwestern Front i te Tihema, i whawhai ai ia i te Pakanga o te Hotoke
hei rangatira mo te 2nd Border Regiment o te 9th Army i te rohe o Kandalaksha. Mo tana "tohe i te pakanga", i whakawhiwhia a Yenshin ki te Order of the Red Banner i te 26 o Aperira 1940. Whai muri i te mutunga o te pakanga ka hoki ia ki te Kura Tuarua o NKVD, ana ka mutu tana tohu i te marama o Hanuere 1941 ka noho ia hei kaiwhakaako hoia i te whare wananga.