What category of classified military information does the Operations Plan (OPLAN) for Operation BIG STICK fall under?

The Operations Plan (OPLAN) for Operation BIG STICK falls under Category 5, which includes the most sensitive classified military information. This category is reserved for information that requires a very high level of protection due to its critical nature in national security and military operations. The specifics of OPLANs can lead to significant operational advantages or disadvantages if disclosed, making their confidentiality paramount in preserving the integrity of military strategy and tactics.

Category 5 information typically involves detailed plans that could directly impact the success of military operations. The classification ensures that only authorized personnel who have a confirmed need-to-know have access to such crucial documents.