Mansfeld had hastily retreated up the Oder River into Silesia, and quickly raised another army, with which he intends to attack the hereditary lands of the house of Austria.

Pursued by Wallenstein he presses forward towards Hungary, where he hopes to accomplish his purpose by the aid of Bethlem Gabor, prince of Transylvania.

But when Gabor changes his policy and makes peace with the emperor, Mansfeld is compelled to disband his troops.

Wallenstein sends eight thousand troops to assist Tilly, who is stationed near Brunswick, while Mansfeld sets out for the Dalmatian coast to offer his services to the Republic of Venice, but when he reaches Rakovica near Sarajevo, in Bosnia, he is taken ill, apparently with tuberculosis, and here he dies on November 29, 1626.

He is buried at Split.