Earlier this year I wrote about the Gardener gun. Fred emailed me some photos of the Gardener gun in use by the Dutch army at Fort aan Den Ham, one of the 45 forts that make up the Defense Line of Amsterdam, a UNESCO World Heritage site. Fred volunteers at the fort and gave me permission to use the photos on The Firearm Blog.
While these guns could be used in the field, they were mostly used and
more suited to use as fortress guns on forts and ships.
A recent photo of the fort where the guns used to be mounted
Thanks to Fred for the photos.