Most grateful acknowledgment is made of the permission granted by the Controller of His Majesty’s Stationery Office to quote the extracts given from the published despatches as appearing in the _Gazette_, also, of that of Messrs. J. M. Dent and Sons, Limited, to refer to their edition of _Sir Douglas Haig’s Despatches_, December 1915-April 1919, edited by Lieutenant-Colonel J. H. Boraston, O.B.E., Private Secretary to Earl Haig. Permission to refer to Sir Arthur Conan Doyle’s _British Campaign in France and Flanders_ has also very kindly been given. Although that work is not recognised as an official history, Sir Arthur had a very large mass of official material placed at his disposal, and much of the information he gives, particularly in regard to the work of divisions and the losses sustained by them in the big battles, is of great value. Thanks for similar permissions are also tendered to the author of _The Fifth Army in March 1918_, Mr. W. Shaw Sparrow, and his publishers Messrs. John Lane, The Bodley Head, Limited, and to the author of _The Story of the Fourth Army_, Major-General Sir Archibald Montgomery, K.C.M.G., C.B., and his publishers Messrs. Hodder and Stoughton, Limited. In a letter signifying his approval, Major-General Montgomery remarks: “I know what excellent work the Territorial Divisions did and I hope that they will always get full credit for it.” CONTENTS PAGE INTRODUCTION v 42ND (EAST LANCASHIRE) DIVISION. First Line 1 43RD (WESSEX DIVISION), FIRST LINE. 44TH (HOME COUNTIES DIVISION), FIRST LINE. 45TH (WESSEX) DIVISION, Second Line 15 46TH (NORTH MIDLAND) DIVISION. First Line 21 47TH (LONDON) DIVISION, FORMERLY 2ND LONDON. First Line 29 48TH (SOUTH MIDLAND) DIVISION. First Line 41 49TH (WEST RIDING) DIVISION. First Line 51 50TH (NORTHUMBRIAN) DIVISION. First Line 59 51ST (HIGHLAND) DIVISION. First Line 75 52ND (LOWLAND) DIVISION. First Line 91 53RD (WELSH) DIVISION. First Line 109 54TH (EAST ANGLIAN) DIVISION. First Line 121 55TH (WEST LANCASHIRE) DIVISION. First Line 129 56TH (LONDON) DIVISION, FORMERLY 1ST LONDON. First Line 141 57TH (WEST LANCASHIRE) DIVISION. Second Line 151 58TH (1ST LONDON) DIVISION. Second Line 155 59TH (NORTH MIDLAND) DIVISION. Second Line 165 60TH (2ND LONDON) DIVISION. Second Line 169