What is the primary purpose of a smoke screen in Call for Fire operations?

The primary purpose of a smoke screen in Call for Fire operations is to obscure vision from the enemy. When a smoke screen is deployed, it creates a dense barrier that significantly hinders the enemy's ability to observe troop movements, coordinate attacks, or identify targets. This tactical advantage is crucial for protecting friendly forces as they maneuver, provide cover during troop movements, or execute assaults.

By employing a smoke screen, commanders can disrupt enemy targeting and maintain the element of surprise, ensuring a higher level of safety and effectiveness for their operations. This use of smoke is a well-established technique in military tactics, underscoring its importance in creating a fog of war that impairs enemy situational awareness.

The other options may relate to various military strategies, but they do not capture the primary intent behind the use of smoke screens. Signal communication and marking target locations serve different operational needs, while enhancing visibility for aerial support can contradict the main strategic aim of obscuring enemy observation.