 Rear Admiral Louis Adolphe Bonard (1805–67), appointed as his successor by an imperial decree of 8 August 1861, arrived in Saigon on 27 November and assumed his duties on 30 November.Bonard's arrival coincided with an upsurge in Vietnamese guerrilla activity against the French fomented by the government at Hue, which placed a bounty on the heads of both Frenchmen and Vietnamese in their service.Bands of insurgents attacked Tây Ninh and Tran Bang, and in one particularly galling incident the French lost one of their small warships.