Final answer:
General William Howe believed that destroying the American army would cause the most damage. He sent General Thomas Gage home, who had a high casualty rate by ordering frontal assaults against fortified positions.
Step-by-step explanation:
General William Howe believed that if he destroyed the American army, it would cause the most damage to their cause. To strategically weaken the Americans, Howe sent General Thomas Gage home, who was responsible for ordering frontal assaults against fortified positions and had a high casualty rate among the British troops.