In April 1941, Yugoslavia entered World War II when it was invaded by the German-led Axis powers. At the time of the invasion, "T1" was assigned to the Southern Sector of the KJRM's Coastal Defence Command based at the Bay of Kotor, along with her sister ship "T3" and a number of minesweepers and other craft. "T1" was captured by the Italian Navy shortly after the commencement of hostilities and was operated by them under her Yugoslav designation, conducting coastal and second-line escort duties in the Adriatic. Her guns were also replaced by two L/40 anti-aircraft guns. After the Italians capitulated in September 1943, she was returned by them to the KJRM-in-exile in December 1943. She was commissioned by the Yugoslav Navy (, Југословенска Pатна Mорнарица) after the war, serving as "Golešnica". Her post-war fit-out included replacing her guns with two guns on single mounts and four guns, and removing her torpedo tubes. She continued in Yugoslav service until October 1959, when she was stricken.