What is the nickname for the OH-13 helicopter?

The OH-13 helicopter is known as the "Angel of Mercy." This nickname reflects the helicopter's use primarily as a medical evacuation aircraft during the Vietnam War. Its design allowed for rapid transport of wounded soldiers from the battlefield to medical facilities, embodying the concept of mercy through its life-saving missions. The aircraft's role in providing critical assistance in times of need and its association with medics and rescue operations contributed significantly to this moniker.

In contrast, other helicopters mentioned have different functions or historical contexts. The "Silver Bullet" often refers to different military aircraft known for their speed and efficiency in specific operations. The "Flying Fortress" is a nickname commonly associated with the B-17 bomber, recognized for its defensive armament and reliability during World War II. The "Black Hawk" refers to the UH-60 helicopter, known for its versatility in troop transport, medical evacuation, and special operations, making each of these nicknames unique to the respective aircraft's roles and histories.