http://www.rockislandauction.com/viewitem/aid/66/lid/1653

Did you know that the French Army issued more than 80,000 semiautomatic rifles during WWI? They had been experimenting with a great many semiauto designs before the war, and in 1916 finalized a design for a rotating bolt, long stroke gas piston rifle (with more than few similarities to the M1 Garand, actually) which would see field service beginning in 1917. An improved version was put into production in 1918, but too late to see any significant combat use.

The RSC 1917 was not a perfect design, but it was good enough and the only true semiauto infantry rifle fielded by anyone in significant numbers during the war.