Later in his career he joined Admiral Sir George Rodney in the West Indies and took part in the capture of Sint Eustatius.

Although his career was marked with long periods of inaction and unemployment Admiral Affleck was known as a good officer and was well respected by his peers.

At the Siege of Louisbourg he distinguished himself in leading the boats that cut out the French men-of-war Prudente and Bienfaisant[1] and was promoted to command.

His promotion to commander was confirmed on 1 August 1759 and Affleck accompanied Edward Boscawen in the 18-gun sloop of war HMS Gramont[2] to the Mediterranean.

During the blockade of Pondicherry on 1 January 1761 Panther was dismasted in a hurricane[5] and once more Affleck impressed his superiors by his calm handling of the situation.

He missed the Battle of Martinique in April of that year but was present with Rodney once more at the capture of Saint Eusatia and Saba the following February.