Franco-Münster victory Upper Rhine France Southern Italy North Germany and Scandinavia Pyrenees Americas Naval battles The siege of Groenlo was a 10-day siege of the Dutch town of Groenlo from 1 to 10 June 1672 by the combined forces of France, the Elector of Cologne and the Prince-Bishop of Münster during the Franco-Dutch War.

Bernhard von Galen, bishop of Münster, invaded the Netherlands the on 1 June 1672 in several places, taking several towns (including Enschede, Almelo and Borculo) and laying siege to Groenlo, where his forces were joined by those of France and Cologne.

Groenlo was well-supplied with food, garrisoned with 22 cannon on new gun-carriages and 600 troops (made up of 10 infantry companies and 1 cavalry company, led by the infantry lieutenant-colonel Gustaff Tungel) and defended by bulwarks and a moat (which had proved their effectiveness in a 1627 siege).

However, vastly outnumbered by the French force of over 100,000, it was only able to hold out for 10 days, after which the besiegers moved on to Deventer and other cities, in what became the 'Rampjaar' for the Dutch Republic.

The most important parts of Groenlo's fortifications were demolished by the Bishop of Münster and his occupying troops only left the town in 1674.