What should be used for detailed plans that would make the base order unwieldy?

Using annexes for detailed plans is an effective way to present specific aspects of a broader operational plan without making the overall base order too complex or unwieldy. Annexes allow for the inclusion of supplementary information that might be necessary for executing the mission, covering various areas such as logistics, intelligence, and operational requirements.

This method aids in maintaining clarity and cohesion within the primary order by segregating complex or specialized information that might not be relevant to all personnel involved in the operation. By doing so, it ensures that the main document remains focused and accessible, while still providing the necessary depth of information through the annexes. This structure supports better comprehension and execution of tasks among different units or individuals who may require different levels of detail.

Other choices do not fulfill this purpose in the same way. Supplements typically provide additional information but may not complement the base order as neatly. FRAGORDs, or Fragmentary Orders, are used to modify existing orders and may lead to confusion if overused without the original context at hand. Operations plans encompass broader strategies and objectives and can become overwhelming when trying to convey every detail within a single document.