Vice Admiral Sir George Collier was an officer of the Royal Navy who saw service during the Seven Years' War, the American War of Independence and the French Revolutionary Wars. As commander of the fourth-rate ship HMS Rainbow, he was one of the most successful British naval commanders during the opening stages of war with America. He achieved considerable success as one of the senior officers on the North American coast, conducting and organizing several highly effective raids and counter-strikes. He was superseded however, and returned to Britain to play a role in the closing events of the war in European waters, before moving ashore to start a political career. He enjoyed a brief return to service with the resumption of war with France, and achieved flag rank, but died shortly afterwards.

The Penobscot Expedition was a 44-ship American naval armada during the Revolutionary War assembled by the Provincial Congress of the Province of Massachusetts Bay. The flotilla of 19 warships and 25 support vessels sailed from Boston on July 19, 1779, for the upper Penobscot Bay in the District of Maine carrying an expeditionary force of more than 1,000 American colonial marines and militiamen. Also included was a 100-man artillery detachment under the command of Lt. Colonel Paul Revere.