Identify a major historical event that has influenced modern military tactics.

The Vietnam War significantly influenced modern military tactics, particularly through the introduction and adaptation of guerilla warfare and asymmetric tactics. This conflict highlighted the effectiveness of unconventional warfare strategies where smaller, less-equipped forces could leverage their knowledge of the terrain and use hit-and-run tactics against a more conventionally superior opponent. The lessons learned from the Vietnam War led many military organizations worldwide to rethink their approaches to combat, emphasizing flexible strategies, mobility, and the importance of intelligence and local support in counterinsurgency operations.

Although the other historical events mentioned also brought about important tactical considerations, the Vietnam War's impact on asymmetric warfare directly shapes many contemporary military operations today, especially in regions where traditional force-on-force engagements may not be feasible. This shift has become critical as military planners consider how to engage in conflicts that may not follow traditional warfare paradigms.