This timeline covers all
the political and military events that occurred within both North
and South America between the years 1939 and 1945.
December 7, 1941 - a date which will live in infamy - The United
States of America was suddenly and deliberately attacked by
naval and air forces of the Empire of Japan.
President F.D. Roosevelt
8th December 1941
American Mk.I 'Little-Boy'
Little Boy as a gun-type device in
which two masses of Uranium 235 were brought together
to create the explosive critical mass. Fusing was by means
of modified AN/APS-13 tail-warning radar sets, the device
being detonated approximately 1,900ft above the target.