The "Thérèse" arrived at Candia on 19 June 1669 in company with 17 transport ships and 6,000 French soldiers. The French force was there to support the Venetian forces during the Siege of Candia. Another 24 French warships arrived on 3 July. Six days after their arrival the leader of the French corps, François de Vendôme, Duc de Beaufort, was killed in battle and took over. On 10 July a council of all the leaders of the allied armies took place and the decision was made to use the fleet to attack the Turks northwest of the city, as this part of the city was totally impoverished. After the bombardment the allied forces aimed to strike and repel the Turks. 24 July was selected as the day of the operation. As planned that day, the whole Navy sailed west of the city to the mouth of the river Giofyros. The fleet comprised 58 warships mounting 1100 cannon. For three hours the fleet continuously bombarded the Turks, when suddenly "La Thérèse"s powder magazine caught fire, resulting in the destruction of the ship. Only seven of her crew survived out of 350. Immediately after this incident there was great confusion in the French naval force and the fleet's commander, Vincenzo Rospigliosi, ordered the bombardment to be abandoned, and sailed the fleet to the island of Dia.