Battle of Alvøen
The Battle of Alvøen was a naval battle of the Gunboat War between Denmark-Norway and the United Kingdom of Great Britain and Ireland . 
<triplet> Battle of Alvøen <subj> Gunboat War <obj> part of <subj> Denmark-Norway <obj> participant <triplet> Gunboat War <subj> Denmark-Norway <obj> participant <subj> United Kingdom of Great Britain and Ireland <obj> participant