Douglas B-18 Bolo

B-18 Bolo bombers in flight[1]

The Douglas B-18 Bolo was a medium bomber used by the United States of America during the late 1930s and early 1940s.


Derived from the Douglas DC-2 airliner, and designed to replace the Martin B-10 in USAAC service, the B-18 was the first medium bomber built by the Douglas company. After competing at bomber trials held at Wright Field in 1935, against the Martin 146[N 1] and the Boeing Model 299,[N 2] 133 examples of the B-18 were ordered by the Army General Staff in January 1936, as opposed to only 13 of the more expensive YB-17s.[2]



  1. An improved version of the B-10
  2. Forerunner of the Boeing B-17 Flying Fortress


  1. World War 2 Planes
  2. Crosby, Francis. Bombers of World Wars I and II. Southwater (Anness Publishing). 2005. ISBN 1 84476 207 6 Page 60