On November 4, 1913, the Valkyria was reactivated to be used in the Mediterranean Sea until February 4, 1914. The operation took place after the end of the Balkan Wars with ongoing tensions between the states, whereby due to the close relationship of the royal families, Denmark had special relations with Greece. The cruiser was converted for use and the old, very slow-firing 15 cm guns of the side battery were replaced by modern 75 mm rapid-fire cannons.
