Battle of Lützen

Wallenstein’s forces in total outnumbered those of the Swedes. However, he had detached Pappenheim’s cavalry. Gustavus determined to make the most of his temporary advantage and give battle.

Wallenstein’s forces had entrenched in the ditches along a road. In a see-saw battle they were finally driven out. Wallenstein led his forces back to Bohemia.

But the Swedes too had lost: their King Gustavus lay dead on the field of battle.

http://www.pipeline.com/~cwa/Lutzen_Phase.htm