What are the two types of screens in military tactics?

The correct answer identifies the two types of screens as stationary and moving. In military tactics, a screen is a form of defense that involves deploying units to provide early warning of enemy movements while simultaneously obscuring one's own forces.

Stationary screens involve the deployment of units at fixed points to detect incursions, holding positions to secure and monitor a designated area, which allows for better control and management of resources. These fixed units can engage threats as they arise, but their location does not change unless the tactical situation dictates otherwise.

Moving screens, on the other hand, consist of units that are actively changing their positions in response to enemy movements. This mobility allows the forces to maintain contact with the enemy while maintaining the ability to maneuver, providing greater flexibility in the battlefield. This type of screen can create a dynamic defense and allow for responsive tactics to react to enemy actions.

The focus of the context around stationary and moving screens lies in their roles in information gathering and force protection during operations, which are critical for executing successful military strategies.