MILITARY INTELLIGENCE SERVICE, WAR DEPARTMENT, Washington DC, SPECIAL SERIES No. 12 German Military Abbreviations, April 12, 1943
"Perhaps to a greater extent than any other army, the German Armed Forces employ military abbreviations on their maps and charts, on task force tables of organization, on direction and location sign posts in combat zones, on field orders, and, in short, in every case where abbreviations may possibly be used. These abbreviations are often used in connection with military symbols (see German Military Symbols, January 1943, Military Intelligence Service). A thorough knowledge of both abbreviations and symbols is therefore essential to military personnel engaged in the interpretation of captured documents."