Sulfur mustard later also against the French Second Army. The name Yperite comes from its usage by the German army near the town of Ypres. The Allies did not use mustard agent until November 1917 at Cambrai, France, after the armies had captured a stockpile of German mustard shells. It took the British more than a year to develop their own mustard agent weapon, with production of the chemicals centred on Avonmouth Docks. (The only option available to the British was the Despretz–Niemann–Guthrie process). This was used first in September 1918 during the breaking of the Hindenburg Line. Mustard agent was dispersed
Battle of Monastir (1917) Battle of Monastir (1917) The Battle of Monastir (1917) was a failed French attack against German-Bulgarian fortifications North and West of Monastir, between March 12 and May 26, 1917 during the Salonika Campaign in World War I. The battle, or, better said, series of operations, is known under several names. In French it is known as "Bataille de la cote 1248" (Battle of Hill 1248) and "Bataille de Pelister" (or Péristéri) after the Pelister mountain. In Bulgarian it is known as the "Battle of Chervena Stena", after the Chervena Stena or Crvena Stena ridge, also in the Pelister mountain range.