My Dutch forces were besieging Roanoke, defended by 9 soldiers. I was softening up their defences with Cannon, supported by blockading ships, when an English Caravel approached. I attacked it with my Privateer - and Roanoke immediately fell! The two consecutive messages on my Event Log read: 'After being defeated by your Privateer, a Caravel has escaped' and 'You have captured Roanoke'. The only Combat Log report was of the naval battle. I did indeed have possession of Roanoke although all my units were still outside the colony, with full mp. The Caravel turned up, badly damaged, in a nearby Indian Village while all 9 defending soldiers were now sitting on an adjoining forested hill. I have saves available but unfortunately cannot repeat the bug - the Caravel is destroyed on replay. Vanilla Col, Revolutionary on an XL map. No other changes apart from the map size. Does anyone have a suggestion as to why the colony fell, and has anyone come across this before?