Count John III of Nassau was a prominent nobleman in the 16th century, known for his role in the {Nassau} family, which played a significant part in the history of the {Netherlands}. He was born in 1560 and became a key figure in the {Dutch Revolt} against Spanish rule, supporting the cause of independence for the {Dutch} provinces. As a military leader, John III was involved in various battles and campaigns, contributing to the efforts of the {Union of Utrecht}. His leadership and strategic skills helped shape the political landscape of the region during a time of significant conflict and change.