Initial construction of Fort Charles began as early as the 1630s, with the aim of protecting Charlestown and its harbour.
The reason for all of these fortifications was the protection of Nevis' lucrative sugar trade, which at one time was more profitable for Britain than all of the North American colonies combined.
[2] In 1706, the entire island was overrun by French forces under Pierre Le Moyne d'Iberville.
The entire island of Nevis subsequently surrendered to de Grasse without a shot, allowing him to lay siege to Brimstone Hill on Saint Kitts.
Fort Charles was briefly manned by a small French garrison during this time, and all serviceable guns were removed for use against the British on Saint Kitts.