What type of command involves organizing and employing forces?

Operational command refers to the authority to organize and employ forces across a range of military operations. This command level focuses on the planning and execution of campaigns and major operations to achieve strategic objectives. It involves coordinating various resources and capabilities to achieve desired effects in a theater of war or conflict.

A combatant command, while it does involve command authority over operations, is more about overarching strategic command across regions rather than the specific organization and employment of forces at the operational level. Tactical control pertains to the direction of forces in specific engagements or battles, which is on a much smaller scale than what operational command typically entails. Support command involves providing assistance to other units but does not cover the comprehensive organization and employment of forces. Therefore, operational command is the correct answer as it encapsulates the full scope of planning and execution necessary for effectively utilizing military forces in operations.