Menno van Coehoorn, Dutch soldier and engineer (born 1641)

Menno, Baron van Coehoorn, March 1641 to 17 March 1704, was a Dutch States Army officer and engineer, regarded as one of the most significant figures in Dutch military history. In an era when siege warfare dominated military campaigns, he and his French counterpart Vauban were the acknowledged experts in designing, taking and defending fortifications.