'Ever your own, Johnnie, Britain 1938-42' recounts the experiences of John Kemp through letters written to his wife about his life in the army, from the time of his voluntary enlistment in 1938 to his departure from Glasgow for the invasion of Axis occupied North Africa in 1942. The book follows John's rapid rise through the ranks from a Gunner to the position of the Regimental Sergeant Major of the 76th Heavy Anti Aircraft Regiment, Royal Artillery, during the Battle of Britain, and the following preparations for the Regiment's overseas service. In addition to his letters, the book contains notes and commentary to give context to his writing.