What does the concept of 'unity of effort' refer to in military planning?

The concept of 'unity of effort' in military planning emphasizes the importance of collaboration and integration among various organizations and units to work towards a shared goal. When multiple entities come together, each with their own strengths and capabilities, they can maximize their collective effectiveness. This coordination is crucial in complex operations, where the success of one unit can significantly impact the overall mission. By aligning their efforts, organizations reduce the risk of conflicting actions and ensure that resources are used efficiently, ultimately leading to a more effective execution of the mission.

In contrast, the other options do not align with the principle of 'unity of effort.' Independence among units contradicts the need for collaboration; prioritizing individual unit success over collective goals fails to recognize the value of joint operations; and delegating authority, while important, does not inherently address the necessity of coordinated effort across different units and organizations. Unity of effort thus focuses on harmonizing actions and strategies to accomplish overarching objectives, making B the correct choice.