Steven John 
Welsh at War: The Grinding War [PDF ebook] 
The Somme and Arras

The Welsh at War trilogy is the culmination of over twelve years of painstaking research by the author into the Welsh men and infantry units who fought in the Great War.These units included the four regular regiments the Royal Welsh Fusiliers, South Wales Borderers Welsh Regiment and Welsh Guards as well as the Territorial Monmouthshire Regiment, the Yeomanry regiments: the Denbighshire Hussars, Pembroke Yeomanry, Montgomeryshire Yeomanry, Glamorgan Yeomanry and Welsh Horse Yeomanry and their amalgamation into service battalions for the regular regiments during 1917.Welsh troops fought with great courage in every theater of the war the Western Front, Aden, China, Gallipoli, Egypt, India, Italy, Salonika and in Palestine and in addition to the casualties suffered during these campaigns, many men gained recognition for acts of gallantry.The three volumes, split chronologically, cover all of the major actions and incidents in which each of the Welsh infantry regiments took part, as well as stories of Welsh airmen, Welshmen shot at dawn, Welsh rugby players who fell, Welsh gallantry winners and the Welshmen who died in non-Welsh units, such as the Dominion forces and other units of the British armed forces.The Welsh at War records the gallant work of Welsh units and servicemen during the period between the arrival of the 38th (Welsh) Division in France during December 1915 until the aftermath of the Battle of Arras in the summer of 1917, covering: the campaigns in Mesopotamia, Salonika, Egypt and Palestine; the Battle of Jutland; the Somme offensive; the German Withdrawal to the Hindenburg Line; the Battle of Arras; the Battle of Messines Ridge; and the build up to the Third Battle of Ypres.