Mezue nkebi ahịrịokwu a: Ka ndị agha Reds nọ na-emeri n'agha ahụ, Antikainen gbagara Soviet Russia ná ngwụsị April 1918. Ọ bụ otu n'ime ndị guzobere Kọmunist Party nke Finland, nke e guzobere na Moscow n'August 1918. Antikainen gụrụ akwụkwọ na Petrograd Red Officer School ma gụchaa ya n'oge opupu ihe ubi nke 1919. Na Agha Obodo Russia, ọ lụrụ ọgụ megide ndị ọcha Finnish na East Karelia. Na Jenụwarị 1922, Antikainen duziri otu ndị agha na Agha Kimasozero, ebe ndị agha Red Army mejupụtara ndị Finnish Reds meriri ndị ọcha ma chụghachi ha na Finland. Ihe nkiri 1937 a kpọrọ "Za Sovetskuyu Rodinu" (N'ihi Obodo Ndị Soviet) dabeere n'ihe ndị ahụ merenụ. Oleg Zhakov na-egwu Antikainen. O sokwa mee nnyocha banyere
Ihe mere na Kuusinen Club n'afọ 1920, na mkpochapụ nke nnupụisi Kronstadt otu afọ mgbe nke ahụ gasịrị. Mgbe ọ rụsịrị ọrụ dị ka onye nkuzi na Red Officer School, a kpọfere Antikainen na Communist International na 1924. Site na 1926 ọ kụziri ihe na International Lenin School na Moscow.