: Many units developed famous nicknames, such as the "Bloody Hundredth" (100th BG) or the "Jolly Rogers" (90th BG). Key Resources & Research Tools
For those researching a specific unit or relative, several foundations and archives provide detailed guides: 100th BG Reference Guide
: Bomb groups operated under a Wing (tactical control), which reported to an Air Division (strategic planning), which in turn reported to a numbered Air Force (e.g., the Mighty Eighth Air Force in Europe). bomb group
A was a primary tactical and administrative unit of the U.S. Army Air Forces (USAAF) during World War II, typically consisting of three to four flying squadrons and approximately 50 to 70 aircraft . These groups were organized into larger Wings and Air Divisions to execute strategic bombing campaigns across various theaters of war. Organizational Structure
To coordinate massive "Maximum Effort" formations, each group used distinct visual markings: : Many units developed famous nicknames, such as
: Beyond aircrews (pilots, navigators, bombardiers, gunners), a group required extensive ground support, including armorers, mechanics, and administrative staff. Operational Identification
: A group was usually made up of four squadrons. For example, the 397th Bomb Group included the 596th, 597th, 598th, and 599th squadrons. Army Air Forces (USAAF) during World War II,
: Letters or symbols painted on aircraft tails identified the group and its division. For instance, a "Square J" identified the 390th Bomb Group.