 In 1914 and 1917, Ivanauskas participated in scientific expeditions into Northern Russia (Murmansk and Archangelsk) and Norway.In 1918 Ivanauskas returned to Lithuania and together with his wife Honorata opened a Lithuanian school.In 1920, he moved to Kaunas and worked as adviser in Ministry of Agriculture of Lithuania, also helped organizing Higher courses, that later became University of Lithuania.