The 4th Battalion of the Dorset Regiment was originally a first line Territorial Army unit and on the outbreak of war in 1939, raised a 2nd Line duplicate, the 5th Battalion when the TA doubled in size. The 4th and 5th Battalions were both in the 43rd (Wessex) Infantry Division which took part in the fighting in Normandy, at Arnhem and in the Rhine crossing. They both served in the 129th Infantry Brigade. This unit history is complete with awards, full citations, maps and photos.