What are the three parts of a field message form?

The correct answer is based on the structure of a field message form, which is designed for efficient and effective communication in military contexts. A field message form consists of three distinct parts: the heading, which contains essential details such as the message originator and date; the text, which conveys the main content or information to be communicated; and the ending, which may include the sender's signature or any necessary closing remarks.

This structured approach ensures clarity and organization in conveying messages, allowing for rapid understanding and action in the field. Each component serves a specific purpose and follows the military protocol for message drafting, which is crucial in operational environments where accuracy and expedience are paramount.