Which campaign is referred to as the longest and bloodiest air campaign in history?

The Combined Bomber Offensive is recognized as the longest and bloodiest air campaign in history primarily due to its extensive duration, which spanned from 1942 to 1945 during World War II. This strategic bombardment campaign aimed to destroy Germany's industrial and military capacity and to cripple morale by targeting cities and infrastructure.

The campaign involved a significant commitment of resources and manpower, utilizing both the United States Army Air Forces and the Royal Air Force. Millions of tons of bombs were dropped over the course of the operation, resulting in a high number of casualties, not just among military personnel, but also among civilians in the targeted areas. This relentless bombing campaign contributed to the eventual defeat of Nazi Germany, showcasing the powerful impact of air power in modern warfare.

In contrast, the other options represent significant military air operations or campaigns but do not match the scale and sustained intensity of the Combined Bomber Offensive. The Battle of Britain, while a pivotal aerial defense, was shorter in duration and primarily focused on repelling attacks rather than continuous bombardment. The Vietnam Air Campaign involved a different context and strategies, leading to a different set of operational outcomes. Operation Desert Storm was a significant conflict but was more limited in duration and scope compared to the extensive and protracted Combined