 On 21 January she left Naples for the Anzio-Nettuno beachhead where she swept mines prior to the assault the next day, and patrolled and provided anti-aircraft fire during the bitter fighting ashore.Except for two voyages to Bizerte to replenish, "Dextrous" served off Anzio until 12 August 1944 when she sailed from Naples for pre-invasion minesweeping off the southern coast of France.She swept and patrolled there until 1 October when she put into Bizerte.