What document is used to record care given to a casualty in the field?

The U.S. Field Medical Card, officially designated as DD Form 1380, is the correct document used to record care given to a casualty in the field. This standardized form is crucial for ensuring that all pertinent information regarding the medical treatment and condition of a casualty is accurately documented during and after care.

Using the DD Form 1380 allows medical personnel to provide clear, concise, and organized records, which are essential for continuity of care as the casualty is transported to higher levels of medical assistance. This form captures vital statistics, treatment administered, and any significant changes in the casualty's condition.

In contrast to other options, such as the Field Medical Report or the Combat Medical Record, DD Form 1380 is specifically designed for immediate use in field conditions, making it most suitable for on-scene documentation of care. This highlights its importance in combat and emergency situations, where timely and accurate information transfer can significantly affect patient outcomes.