The primary advantage for the American troops during the Battle of Bunker Hill was their strong defensive positions on elevated ground, particularly on Breed's Hill.

This favorable terrain enabled them to effectively monitor and confront British forces as they drew near. The Americans could fire down on the advancing troops, enhancing the impact of their limited firepower. This strategic positioning resulted in considerable British casualties during the early attacks. Even though they were outnumbered and less well-equipped, the defensive advantage showcased the Americans' capacity to mount a strong resistance, underscoring their resolve to protect their land from British incursions.