MB-1 and MB-2 Bombers
the early months of American participation
in World War I, the military turned to
more advanced European designs for its
new warplanes. Martin managed to break
the pattern in January 1918 with an order
for an all-American bomber, the MB-1.
June, 1920, the Army ordered twenty of
an improved version, the Model MB-2. This
was the order that made the MB series
famous: the planes were rushed to completion
in time for bombing tests the next year
against captured German warships.