The land force comprised about 6,000 newly raised Marines, the 15th and 24th Foot, and 3,600 American colonial troops. Those figures imply roughly 1,200 men in each regular regiment. The earlier plan had expected about 6,000 Americans and two additional British Army regiments. Naval recruitment of Marines helped compensate for the Army's limited contribution. The contingents arrived with markedly different standards of training, while Cathcart, the commander expected to integrate them, had died. A nominal troop total therefore concealed both unmet commitments and a substantial task of military organization.
Notable Point · 59:33-1:01:02
Why 12,000 troops fell short of the plan
The roughly 12,000 troops came from differently trained contingents after larger British and American commitments fell short.