Rousoukai (老壮会, The Society for Old Combatants) was a Japanese think tank which attracted participants from both the left-wing and right-wing of Japanese politics. It was founded on 9 October 1918 and continued until 1921. Members Left-wing Sakai Toshihiko References 1918 establishments in Japan Organizations established in 1918 Organizations disestablished in 1921 Think tanks based in Japan