 He served off South Africa for the next two years, suddenly sailing in late 1810 to take over the operations to invade Mauritius and seize it from the French.Most of the fighting had already been concluded by Admiral William O'Bryen Drury before Bertie's arrival and Drury was furious at Bertie's behaviour, writing several strong letters to the Admiralty in protest.Bertie returned to Britain in 1811 and endured a brief political storm over his actions at Mauritius, which had been criticised by his fellow senior officer on the island, Lord Minto.