Explain OPCON vs TACON within Marine C2.

• A. OPCON gives authority to direct forces in operations; TACON gives authority to direct use of certain forces or assets for limited purposes.
• B. OPCON is for information only.
• C. TACON gives full command of units.
• D. OPCON and TACON are the same.

Answer: (A)

The practical distinction lies in how broadly each type of control lets a commander shape the fight. Operational control gives authority to direct forces in operations—organizing, employing, and assigning tasks across units to accomplish the mission and reallocate forces as needed. Tactical control, by contrast, is narrower: it allows directing the application of specific forces or assets for a defined, limited purpose, without authority to change the unit’s organization or overall mission. In practice, you’d use OPCON when you need a commander to steer an operation across multiple units and phases, including movement and tasking, while TACON is used to control the use of particular assets (like certain aircraft sorties or fire-support assets) for a specific objective within those limits. So the correct statement matches this, describing OPCON as directing forces in operations and TACON as directing the use of certain forces or assets for limited purposes. The other options misstate OPCON/TACON by claiming one is information-only, one grants full command, or that they’re the same.