The Kingdom of Prussia
Fall and Rise
Prior to the Napoleonic Empire, the new Kingdom of Prussia seemed poised for greatness. A series of blunders however saw its initial gains divided among its enemies and cadets, the kingdom itself reduced to the Old Duchies and Pomerelia, a near vassal of Russia and Sweden.
Then came the death of the Emperor Napoleon and the collapse of his empire. Sweden then Britain promoted the expansion of Prussia against a resurgent Denmark and Russia in turmoil.
The Polish Revolt saw the addition of Netzen & Posen districts as a Swedish guarantee of the independent Kingdom of Poland.
British mediation saw all Pomerania added in exchange for recognition of Denmark up to the Elbe and Mecklenburg.
War with Saxony saw the Hohenzollern-Potsdam rulers defeated and the Duchy of Brandenburg added.
Barring minor border changes during the Great War this has been the extent of the Kingdom of Prussia.
Eagle, Sun, and Stripes
The Flag developed from that used following the division: a black & white horizontal stripes bearing the Prussian Arms of a black eagle on white.
Varying stripes were used by the King and Royal Armies; the civil administration tending to use 3, the Royal Standard reverting to a plain white field.
The Sun developed from the ornate golden fimbriation used around the arms. With the annexation of Brandenburg celebratory flags turned the fimbriation into rays of the sun. This proved so popular when reused during the Great War it was officially added to the design.