 Complete the following phrase:  Jones was involved in the Battle of Loos in SeptemberOctober 1915 and later served in the Ypres Salient in Belgium the following year. The 20th Division was among those tasked for the Battle of the Somme, and from 22 August 1916 it served in the Somme sector in France. On 3 September 1916, it was tasked with the 