The 12th (Service) Battalion landed at Boulogne as part of the 65th Brigade in the 22nd Division in September 1915 but moved with the Division to Salonika, arriving in November 1915 before moving to France for service on the Western Front in July 1918. The 15th (Service) Battalion (1st Salford) and 16th (Service) Battalion (2nd Salford) landed at Boulogne as part of the 96th Brigade in the 32nd Division in November 1915 also for service on the Western Front. The 17th (Service) Battalion (1st South East Lancashire) and 18th (Service) Battalion (2nd South East Lancashire) landed at Le Havre as part of the 104th Brigade in the 35th Division in January 1916 also for service on the Western Front. The 19th (Service) Battalion (3rd Salford) (Pioneers) landed at Le Havre as part of the 96th Brigade in the 32nd Division in November 1915 also for service on the Western Front. The 20th (Service) Battalion (4th Salford) landed at Le Havre as part of the 104th Brigade in the 35th Division in January 1916 also for service on the Western Front.