Battles of Pultusk and Golymin: Russian forces hold French forces under Napoleon.

An Austrian corps is defeated by the forces of the Duchy of Warsaw in the Battle of Raszyn, part of the struggles of the Fifth Coalition. On the same day the Austrian main army is defeated by a First French Empire Corps led by Louis-Nicolas Davout at the Battle of Teugen-Hausen in Bavaria, part of a four day campaign which ended in a French victory.

Two Austrian army corps in Bavaria are defeated by a First French Empire army led by Napoleon I of France at the Battle of Abensberg on the second day of a four day campaign which ended in a French victory.

Two Austrian army corps are driven from Landshut by a First French Empire army led by Napoleon I of France as two French corps to the north hold off the main Austrian army on the first day of the Battle of Eckmühl.

The second day of the Battle of Eckmühl sees the Austrian army defeated by the First French Empire army led by Napoleon I of France and driven over the Danube at Regensburg.

Napoleon I of France orders the annexation of the Papal States to the French Empire.

Napoleon annexes the Kingdom of Holland as part of the First French Empire.

Napoleon annexes Westphalia as part of the First French Empire.