The one-hour evacuation standard was incorporated into Army Regulation (AR) 40-3.

• A. AR 55-1
• B. AR 40-3
• C. AR 350-1
• D. AR 190-2

Answer: (B)

The question tests knowledge of where medical evacuation timelines are codified. The one-hour evacuation standard is part of the Army’s medical service policies, focusing on rapid casualty evacuation to higher levels of care. Army Regulation 40-3 covers Medical Services, including casualty evacuation procedures and time standards for moving patients through the system. That’s why this regulation is the correct place for the standard. The other regulations address topics like aviation operations, training and leader development, or law enforcement, which do not govern medical evacuation timelines. Therefore, the standard being incorporated into AR 40-3 aligns with its role in directing medical support and MEDEVAC operations.