舞鶴鎮守府
At the war's end, Yashiro was assigned to Berlin, Germany as naval attaché until December 1907, when he was promoted to rear admiral. In December 1908, he was commander of the Yokosuka Reserve Fleet, and became commander of the IJN 1st Fleet from December 1909, Training Fleet from July 1910, and IJN 2nd Fleet from March 1911. In December 1911, he became commandant of the Naval Staff College. During his time at the Naval Staff College, Yashiro was a strong proponent of introducing "karate" into the Navy's training program. In September 1913, he was transferred to become commandant of the Maizuru Naval District.