[5] Bernhard von Galen along with Maximilian Henry of Bavaria, under Cologne would invade the Dutch Republic.

Bernhard eventually chose to besiege Groningen, because his connections with the Nieuweschans would be closer, and he thought he could invade Friesland with just a few thousand men.

[8] The siege started on the 21st of July, in contrast towards the earlier cities, Groningen was well prepared under the command of Carl von Rabenhaupt, with a garrison of around 2.500 men.

On the 27th of July, their request was received by the States General, William III of Orange decided to send a regiment to Groningen under.

[11] Although the troops under Bernhard von Galen tried hard to bombard the city, their attempts were to no avail, mainly due to their supplies being harrased by a guerilla campaign by Hans Willem van Aylva in Friesland.