Matsukata Masayoshi
After the establishment of the Meiji government, Shinagawa was sent to France for studies, arriving in Paris in 1870, where he was thus able to experience modern western military technologies and strategy during the Franco-Prussian War firsthand. After his return to Japan, he was appointed Chief Secretary of the Home Ministry, later rising to the post of Junior Vice Home Minister, followed by the position of Senior Vice Agriculture and Commerce Minister. He supported the development of agriculture and forestry through his efforts towards the formation of Credit unions and agricultural cooperatives. He later briefly returned to Germany as a diplomat. In 1891, Shinagawa was appointed Home Minister in cabinet of Prime Minister Matsukata Masayoshi.