The background of the shield can be divided into two potrtions in a variety of ways, and each portion coloured in a different fashion. In European Heraldry there is a tendency to use these areas to combine two different coats of arms, but in British and Scottish heraldry the preference is to treat the divided field as a single decorative element with other features placed as normal. Whatever tradition is followed, one of the most common divisions is per fesse, a simple separation along a horizontal line. Understanding Signs & Symbols – Heraldry, S. Oliver & G. Croton, Quantum, London, 2013, P63. Not quite as common as the alternative vertical partioning, per pale it still presents a pleasing aspect A Glossary of Terms used in British Heraldry, J.H. Parker, Oxford, 1894, Entry:Party.