Hamilton's levy was raised despite the end of the Anglo-Spanish War. In addition English troops would constitute a large part of the States army but in their pay after 1630. In the following years under Frederick Henry and Horace Vere the cities of Maastricht and Rheinberg were recaptured.

Johannes Kepler (/ ˈ k ɛ p l ər /; German: [joˈhanəs ˈkɛplɐ, -nɛs -] (); 27 December 1571 – 15 November 1630) was a German astronomer, mathematician, astrologer, natural philosopher and writer on music. He is a key figure in the 17th-century Scientific Revolution, best known for his laws of planetary motion, and his books Astronomia nova, Harmonice Mundi, and Epitome …