 the british 31st division was a new army division formed in april 1915 as part of the k4 army group and taken over by the war office on 10 august 1915. comprising mainly battalions from yorkshire and lancashire, the division was sent to egypt in december 1915 before moving to france in march 1916 and spent the remainder of the first world war in action on the western front. the 31st division was the quintessential new army division, being made up entirely of pals battalions. the 31st division's first major action was on the first day of the somme campaign (1 july 1916). the division suffered 3,600 casualties and failed to reach any of its objectives. == unit history ==  == formation == ; 92nd brigade : *10th (service) battalion (1st hull, hull commercials), the east yorkshire regiment *11th (service) battalion (2nd hull, hull tradesmens), the east yorkshire regiment *12th (service) battalion (3rd hull, hull sportsmens), the east yorkshire regiment (until february 1918) *13th (service) battalion (4th hull, t'others), the east yorkshire regiment (until february 1918) *11th (service) battalion (accrington), the east lancashire regiment (from 94th bde february 1918) ; 93rd brigade : *15th (service) battalion (1st leeds, leeds pals), the prince of wales's own (west yorkshire regiment) *16th (service) battalion (1st bradford, bradford pals), the prince of wales's own (west yorkshire regiment) (until february 1918) *18th (service) battalion (2nd bradford, bradford pals), the prince of wales's own (west yorkshire regiment) (until february 1918) *18th (service) battalion (1st county, durham pals), durham light infantry *13th (service) battalion (1st barnsley), the york and lancaster regiment (from 94th bde february 1918) ; 94th brigade : *11th (service) battalion (accrington), the east lancashire regiment (to 92nd bde february 1918) *12th (service) battalion (sheffield), the york and lancaster regiment (disbanded february 1918) *13th (se
1915_establishments_in_the_United_Kingdom Divisions_of_the_United_Kingdom_in_World_War_I Infantry_divisions_of_the_United_Kingdom Military_units_and_formations_disestablished_in_1919 Military_units_and_formations_established_in_1915