Hello Trooper, it was indeed remiss of me not to mention the other volumes but volume one is the place to start ideally as it decodes and explains the medal index card and its variations in minute detail with roughly 30 pages of MIC specific abbreviations alone. The section on the 1914-5 star also lists the alphanumeric codes for theatre of war and even explains why different coloured inks were used on the cards for different entries! Volume two gives you access to practically the entire lexicon of British military abbreviations of the period. These encompass ranks,trades,Regimental numbers, number prefixes, number blocks and a lot more information on the armies from across the dominions, colonies, protectorates, mandates and other territories in staggering detail but volume one deals with card specific codes and nomenclature outside of rank and unit abbreviations. All three volumes deserve a place on the shelf really.