The British underestimated the resolve and determination of the colonial forces during the Battle of Bunker Hill.

They believed that the colonists would be too timid to confront a well-trained army and that their dedication to the revolutionary cause was feeble. However, the determined resistance shown by American forces highlighted a profound sense of purpose and solidarity in their struggle for independence. This miscalculation not only resulted in considerable British losses but also underscored the indomitable spirit of the colonists, ultimately influencing the trajectory of the Revolutionary War.