After an overhaul in which she was coppered in April 1780, she captured the British 20-gun post ship HMS Unicorn on 4 October 1780, off Tortuga.

[1] On 20 April 1782, a 10-ship convoy departed Brest escorted by the 74-gun Protecteur and Pégase, and the frigates Indiscrète and Andromaque.

[1] At sunset, at the mouth of the English Channel, the convoy met a British force of three 74-gun ships of the line under John Jervis; in the ensuing action of 20–21 April 1782, Pégase and the 64-gun Actionaire, armed en flûte, were captured.

[1] A boarding party from Sylph set fire to Andromaque as they left and she was completely burnt.

[7][8] There are reports that after seizing the entire crew, the British kept only the officers and released the seamen, only to open fire on them as they attempted to return ashore.