Northern Taiwan and the Penghu Islands were the scene of subsidiary campaigns in the Sino-French War (August 1884 to April 1885). The French occupied Keelung on 1 October 1884, but were repulsed from Tamsui a few days later. The French won some tactical victories but were unable to exploit them, and the Keelung Campaign ended in stalemate. The Pescadores Campaign, beginning on 31 March 1885, was a French victory, but had no long-term consequences. The French evacuated both Keelung and the Penghu archipelago after the end of the war.