One such attempt was made Action by the French frigate `` Topaze '' , despatched Sending from Brest to Cayenne with a large cargo of flour .

Driven away from Cayenne by Portugal ( allies of Britain , and fighting France themselves in be Peninsular War Hostile_encounter ) , who had recently captured Conquering the colony , `` Topaze '' took Giving refuge under the gun batteries of Guadeloupe .

The Portuguese conquest of French Guiana was an 1809 military operation Military_operation against Cayenne , capital of the South American colony of French Guiana , in the scope of the Napoleonic Wars .

As a result , resistance was inconsistent and despite Cayenne 's strong fortifications , the territory fell Earnings_and_losses within a week .