In all its many variants, about 7,000 Heinkel He 111s were produced. The type first flew in 1935 but did not enter Luftwaffe service until 1937. The He 111 first saw active service in the Spanish Civil War and throughout World War II served in a wide variety of roles — primarily as a bomber, but also in reconnaissance, torpedo bombing, glider towing, and transport. This volume provides meticulous technical coverage of the bomber's development, including detailed performance charts and structural descriptions for each sub-variant, complemented by photographs and line drawings. The book goes beyond standard coverage with a highly detailed look at the He 111H's structure from engine to tail.