Which principle of sustainment combines all of the sustainment elements within operations assuring unity of command and effort?

The principle of sustainment that combines all of the sustainment elements within operations, assuring unity of command and effort, is integration. Integration refers to the process of ensuring that various components of sustainment—such as logistics, personnel, and equipment—work together cohesively to achieve operational objectives. This principle emphasizes the importance of harmonizing efforts across different functions and commands to effectively support military operations.

When sustainment elements are integrated, they can function in a unified manner that enhances overall efficiency and effectiveness. This allows for better resource allocation, streamlined communication, and a more synchronized approach to mission support. By prioritizing integration, commanders can ensure that all aspects of sustainment are aligned with the strategic goals of the operation, facilitating a more coordinated and effective response to the mission's demands.