After commissioning, "Vendetta" was assigned to the 13th Destroyer Flotilla. During early November 1917, the destroyer fired on German minesweepers operating in the Kattegat. On 17 November, "Vendetta" was involved in the Second Battle of Heligoland Bight. On 5 December, the destroyer rescued 430 survivors from after the cruiser hit a mine and sank. In early 1918, "Vendetta" was assigned to operate against Bolshevik forces in the Baltic; running the destroyer "Spartak" aground and assisting in the capture of the destroyer "Lennuk" in separate engagements.