Polish–Lithuanian–Teutonic War

map of army movements during the Grunwald campaign

S. Bollmann - Dieter Zimmerling: Der Deutsche Ritterorden. 2. Auflage 1991. Econ Verlag, Düsseldorf, Wien, New York 1989, ISBN 3-430-19959-X Mečislovas Jučas: The Battle of Grünwald. National Museum Palace of the Grand Dukes of Lithuania, Vilnius 2009. ISBN 9786099507453 Stephen Turnbull: Tannenberg 1410: Disaster for the Teutonic Knights. Osprey, London 2003. Campaign Series 122. ISBN 9781841765617
The Way to Grunwald 1410 and the First Peace of Thorn 1411.

внимательно смотрим на цвета противника братьев-славян :)