Which of the following is NOT one of the fundamentals of defense?

In the context of military operations, the fundamentals of defense are essential principles that guide soldiers in establishing an effective defensive posture. Security, flexibility, and mutual support are critical components of any defensive strategy.

Security involves measures taken to protect personnel, equipment, and installations from enemy threats, ensuring that forces can operate without undue risk. Flexibility allows forces to adapt to changing situations on the battlefield, enabling them to respond to various challenges and threats dynamically. Mutual support refers to the coordination between different units or positions to provide assistance and cover for one another, enhancing the overall defensive capability.

On the other hand, pain management is not considered a fundamental of defense in military doctrine. While it is an important aspect of soldier care and medical support, it does not pertain to the strategic and tactical principles that underpin defensive operations. Therefore, identifying pain management as unrelated to the fundamentals of defense highlights the importance of understanding the core principles that guide military strategy and tactics.