What does the 1/3 - 2/3's rule in planning signify?

The 1/3 - 2/3's rule in planning signifies that commanders should use one-third of the available planning time for their own preparation, while the remaining two-thirds should be allocated for subordinate units to develop their own plans. This approach allows commanders to maintain oversight and provide guidance, while also ensuring that subordinates have adequate time to understand their roles within the larger mission, develop tactical plans, and conduct necessary coordination.

This division of planning time fosters collaboration and enhances the effectiveness of the overall operation, as it encourages subordinate leaders to engage in the planning process and take ownership of their tasks. It strikes a balance between the commander's need for foresight and the necessity for troops to be involved in the planning to ensure mission success.