Topic summary
Captain of the fleet
Extracted from the Wikipedia article Fleet captain.
Historical background
Captain of the fleet was a post rather than a rank in itself, and if its holder's permanent rank was below that of an admiral then he ranked just below the most junior rear-admiral and was entitled to the pay and allowance of a rear-admiral whilst he held the post. The admiral's commands would be issued through his captain of the fleet, and the fleet's responses would be passed back to him. This role of intermediary between the overall commander and the commanded was analogous to that of a commander on a large warship, through whom orders were relayed to the crew and responses received. He would also act in some senses and instances as the admiral's chief of staff.