 Attached to each battalion was a rocket detachment, each with an establishment of 25 men, commanded by lieutenants Balchild and John Harvey Stevens.Both rocket detachments were embarked aboard the transport vessel "Mariner" Rockets were used in the engagements at Fort Oswego and Lundy's Lane.A third battalion of Royal Marines arrived in North America in 1814, with an attached rocket detachment commanded by Lieutenant John Lawrence, which subsequently participated in the Chesapeake campaign.