Oct 1 1917 British cavalry passing over a two-way bridge over…

Oct 1 1917 British cavalry passing over a two-way bridge over the Ypres-Comines Canal https://t.co/sJtY5jGIpI https://t.co/eQL0BHyyR0 http://twitter.com/ThisDayInWWI/status/914469694836371458