Which of the following are elements of a combat patrol?

The elements of a combat patrol focus on critical operational components necessary for the successful execution of the mission. In this context, the inclusion of HQ, Assault, Support, and Security as the correct answer highlights the fundamental structure of a combat patrol.

The HQ (Headquarters) element is essential for command and control, ensuring that all units are coordinated and aware of their roles and responsibilities. The Assault component represents the force that actively engages the enemy, executing the main purpose of the patrol. Support refers to the additional elements that provide backup, either in terms of fire support, reconnaissance, or other necessary resources that enhance the effectiveness of the patrol. Security is crucial as it involves measures taken to protect the patrol from enemy observation and interference, enabling the mission to proceed with minimal risk.

The other choices do not encapsulate the primary operational focus of a combat patrol as effectively. For instance, options that include mission planning or environment as primary elements do not directly correlate with the immediate actions and organizational structure needed during an actual patrol operation, where execution and tactical responses are paramount. Thus, the listed answer captures the core components that are integral to the successful execution of a combat patrol.