The Battle of Bunker Hill illustrated that fortifications can be crucial for defense.

Although outnumbered, colonial forces effectively employed earthworks and defensive positions to inflict significant casualties on British troops. Their strategic use of these fortifications enabled the Americans to maintain their position for a period, demonstrating how well-designed defenses could greatly bolster the effectiveness of a smaller, less experienced army. This experience underscored the importance of strong defensive positions in warfare, shaping military tactics during the Revolutionary War and in subsequent conflicts.