関東州
In 1907, Fukushima was elevated to the title of "danshaku" (baron) under the "kazoku" peerage system. From April 26, 1912 to September 15, 1914, he served as the Governor-General of Kwantung Leased Territory. In 1914, he was promoted to general and was transferred to the second reserve. After the transfer, he served as vice-president of the Association of Reservists.