ARA Brown was commissioned as USS Heermann on 6 July 1943, ARA Espora was commissioned as USS Dortch on 7 August 1943, ARA Rosales was commissioned as USS Stembel on 16 July 1943, ARA Almirante Domecq Garcia was commissioned as USS Braine on 11 May 1943 and ARA Almirante Storni was commissioned as USS Cowell on 23 August 1943.[1][2]
After World War II, they were in a mothball state, but In August 1961, they were handed over to Argentina based on the Argentina-US Ship Loan Agreement. All ships were decommissioned by the time of the Falklands War, to save resources for the war. ARA Almirante Storni fired warning shots and then live shots in the bow of the British oceanic research vessel Shackleton on 2 April 1976.[3]