During the
Russo-Japanese War, Enqvist, largely through the political patronage of his cousin
Theodor Avellan, Chief-of-Staff of the Russian Admiralty and Navy Minister, was appointed as commander of the First Cruiser Division of the Second Pacific Squadron, over numerous officers with higher seniority. He made the new cruiser as his
flagship.
Vice admiral Zinovy Rozhestvensky viewed Enqvist as a political opportunist, and refused to allow him an independent command, but instead forced him to sail with the main force around the southern end of the African continent. During the
Battle of Tsushima on 27–28 May 1905, in order to avoid capture or destruction by the
Imperial Japanese Navy, Enqvist announced to his officers at the end of the first day of the battle that he had decided to flee rather than to continue the battle or to attempt to reach
Vladivostok. Over the objections of his officers, Enqvist ordered the
Oleg south, together with the and to the neutral port of
Manila, where he and his squadron were interned by the Americans until the end of the war. ==Retirement and death==