...in "Militær teknikk":
On 30 april 1940, a Heinkel 115A attacked the Norwegian minelayer "Uller" off the Norwegian coast, damaging it so badly that it had to be put ashore.
And the irony? "Uller" had been taken by the Germans on 9 April and put in KM service, while the Heinkel had been recently purchased from Germany and was operated by the Norwegian naval air force.
cheers