Hallowell was promoted to flag rank in October 1811 .
Boxer followed Hallowell to HMS Malta ; and continued , with short intermissions , under Rear - Admiral Hallowell 's immediate command , until Hallowell was confirmed as commander on 1 March 1815 .
Hallowell was promoted to flag rank in October 1811 , and Boxer followed him to HMS Malta ; and continued , with short intermissions , under Rear - Admiral Hallowell 's immediate command , until he was confirmed as commander on 1 March 1815 .