Count Henry II and his brother Nicholas vigorously defended their claims in Holstein and Schleswig , against Denmark and against the Frisians .
In 1367 , he was commander of a fleet of the Hanseatic League and in 1368 , he conquered Copenhagen .
Count commander   and commander 's brother Nicholas vigorously defended their claims in Holstein and Schleswig , against Denmark and against the Frisians .
In 1367 , he was commander of a fleet of the Hanseatic League and in 1368 , he conquered Copenhagen .