Which principle of joint operations ensures that one responsible commander is in charge for every objective?

The principle that ensures one responsible commander is in charge for every objective is known as Unity of Command. This principle is fundamental in military operations as it establishes a clear command structure, allowing for coordinated and effective execution of missions. By having a single commander responsible for a specific objective, it simplifies decision-making, streamlines efforts, and enhances accountability. This command structure prevents confusion and conflict that can arise from multiple commanders having authority over the same forces, thus ensuring that all efforts are aligned toward a common goal.

Unity of Effort, while essential for coordination among different organizations and agencies, does not specify a single commander responsible for a specific objective. Chain of Command details the hierarchy and flow of authority but does not inherently imply the responsibility of one commander for an objective. Command Responsibility relates to a leader's obligation to ensure their command operates effectively, but again, it does not specifically define how command is centralized for an objective as Unity of Command does.