At what level is the authority to restrict operational areas to aircraft typically held?

The authority to restrict operational areas to aircraft is typically held at the corps level. This is because the corps command encompasses a larger operational scope, integrating multiple divisions and supporting assets. It has the responsibility and operational authority to allocate and control airspace that might be contested or constrained due to conditions on the battlefield. This level of command is also better positioned to consider the broader strategic implications of air operations, making informed decisions to enhance operational effectiveness and safety.

In contrast, authority at lower levels, such as brigade or squadron, would not have the comprehensive overview or resources necessary to manage airspace effectively across wider operational theaters, where coordination among larger units is essential. The division level may have some capability in this area, but it is still subordinate to corps-level authority, which integrates and commands overall airspace management.