Which of the following statements is true about the training of forces within multinational commands?

The statement that training follows specific mission standards for unified action is accurate because multinational commands aim to ensure interoperability and cohesion among forces from different nations. Unified action requires that all participating forces understand and adhere to common operational procedures, tactics, and standards that are tailored to a specific mission or operation. This standardization is essential for effective collaboration in joint missions, as it facilitates seamless integration and operational effectiveness in diverse environments.

In multinational settings, forces often bring different capabilities and procedures, and aligning their training to a set of mission-specific standards is crucial for successful outcomes. It ensures that all participating units can operate together effectively, understanding each other's roles and limitations. This coordinated approach fosters trust and cooperation among the allied forces, which is vital for mission success.

The other statements do not accurately reflect the principles of multinational military training. Forces cannot simply train together without consideration for their specific missions, as that could lead to confusion and inefficiencies. Training is typically mandatory to meet the agreed-upon standards rather than being optional. Finally, training is generally designed to include all participating nations rather than only the host nation's forces to maintain an equitable operational readiness across the command.