In a defensive strategy, what is the purpose of protective obstacles in relation to the final enemy assault?

The purpose of protective obstacles in a defensive strategy is primarily to ensure safety from close combat. These obstacles, such as barbed wire, anti-tank ditches, or minefields, are strategically placed to disrupt and slow down the enemy's advance, making it more difficult for them to reach friendly forces. By creating physical barriers, these obstacles help to create a buffer zone, allowing friendly troops to maintain control and coordination during the final stages of an enemy assault. This is crucial in defensive scenarios, as it helps defenders buy time to respond effectively, reinforce their positions, and prepare for potential counterattacks. In essence, protective obstacles are vital for enhancing the survivability of troops and fortifying defensive lines against enemy assaults.