The Battle of Grunwald did not begin on 15 July.

The war of 1409–1411

The Battle of Grunwald was the central engagement of the war between the Kingdom of Poland and the Grand Duchy of Lithuania on one side, and the Teutonic Order on the other. The conflict grew around Samogitia, located between the Order’s Prussian and Livonian lands. Fighting had already begun in 1409; truce and diplomacy bought preparation time but did not resolve the dispute.

Jogaila and Vytautas were not a frictionless pair of commanders. Joint action depended on trust, provisions, a coordinated march and political concessions. In the game, those pressures become player decisions. They are educational dramatization, not a reconstruction of every conversation or a claim to know exactly what happened.

15 July 1410

On the morning of 15 July, the armies faced one another in the area of Grunwald, Stębark and Łodwigowo. The battle ended in a Polish-Lithuanian victory and the death of Grand Master Ulrich von Jungingen. It did not bring the immediate collapse of the Order’s state: the campaign that followed and the march toward Malbork created a separate political, logistical and military problem.

Army numbers, deployments and parts of the fighting remain subjects of research and debate. The game therefore does not present its tactical illustrations as a literal map or claim that every historical question has one certain answer.

How the game works

Grunwald 1410 is a single-player browser strategy game. You lead a campaign through sixteen decisions: alliance and preparations, the march, the battle and its consequences. Dispatches, character statements and the chronicle distinguish documented history from fictional scenes and from the alternate outcomes created by the player.