Infantry-Based Opposing Force — FM 100-63

This manual is one of a series that describes a capabilities-based Opposing Force (OPFOR) for training US Army commanders, staffs, and units. The manuals in this series are the following:

- FM 100-60. Armor- and Mechanized-Based Opposing Force: Organization Guide.
- FM 100-61. Armor- and Mechanized-Based Opposing Force: Operational Art.
- FM 100-62. Armor- and Mechanized-Based Opposing Force: Tactics.
- FM 100-63. Infantry-Based Opposing Force: Organization Guide.
- FM 100-64. Infantry-Based Opposing Force: Operations and Tactics.
- FM 100-65. Opposing Force Equipment Guide.
- FM 100-66. Opposing Force in Operations Other Than War.

Together, these manuals outline an OPFOR that can cover the entire spectrum of military capabilities against which the Army must train to ensure success in any future conflict. Applications of this series of manuals include field training, training simulations, and classroom instruction throughout the Army. All Army training venues should use an OPFOR based on these manuals, except when mission rehearsal or contingency training requires maximum fidelity to a specific country-based threat. Even in the latter case, trainers should use appropriate parts of this capabilities-based OPFOR to fill information gaps in a manner consistent with what they do know about a specific threat.