Air Routes are commonly marked with which of the following?

Air Routes are primarily marked with Start Points (SP), Release Points (RP), and Air Control Points (ACP). These designations are crucial for effective coordination and management of aerial operations.

The Start Point designates the location where aircraft begin their mission or enter the airspace for a specific operation. The Release Point is where aircrews typically release their payloads, ensuring that their operations are executed at the right moment for maximum effectiveness. Air Control Points are used to manage and direct the flow of air traffic, ensuring safe transit and adherence to flight paths.

While other options include similar terms, the specific terms in this correct answer are standardized in military operations, allowing for clear communication and command. This ensures that all personnel involved in the operation understand the key reference points on an air route, facilitating coordination and minimizing the risk of confusion or miscommunication during critical missions.