Operation ATM

'ATM' was the designation of Allied military convoys (together with a numerical suffix) plying the route from Antwerp to the Thames river after delivering supplies and equipment for the Allies' northern group of military forces (US 12th and British 21st Army Groups) preparing for the final defeat of Germany (December 1944/June 1945).

The first of these 154 'Antwerp to the Thames Military' convoys was ATM.4 of 5/6 December 1944 with the 7,028-ton British Empire Perdita, 2,852-ton British Empire Sedge, 7,176-ton US James B. Weaver, 7,191-ton US Roger Griswold, 7,219-ton British Samarovsk, 7,219-ton British Sambalt and 7,219-ton British Sampa, escorted by the British destroyers Ludlow and Vivacious.

The last of the convoys was ATM.171 of 31 May/1 June 1945, more than three weeks after Germany’s surrender, with the 7,059-ton British Empire Daring, 7,176-ton British Sambalt and 7,219-ton British Samnesse.