12 • THE ROAD TO VICTORY: From Pearl Harbor to Okinawa
World War I. The combination of even more
powerful British-made warships and Togo's
leadership enabled the Japanese to defeat the
strong fleet that Russia sent to the Far East at
the battle of Tsushima in 1905. As a result,
Japan was fully established as a major Pacific
naval power.
It took remarkably little time for the
Japanese to develop naval airpower. In
September 1914 they made the first successful
attack by naval aircraft in the history of warfare
when they struck the Germans in the battle of
Tsingtao, China. Having removed the German
Navy from western Pacific waters, the only
potential rival that the bold, thrusting Japanese
naval leadership then faced was the United
States Navy. The Americans had been keeping
a close eye on the Japanese since their victory
over the Russians in 1905, and in 1906 the US
moved ahead to develop a war plan to defeat
any future Japanese naval threat to US interests
in the Pacific. American authorities formally
adopted the final version of this plan, Plan
Orange, in 1924, although it had its origins in
the thinking of Rear Admiral Raymond P.
Rodgers from as early as 1911. It assumed that,
in the event of hostilities, the initial Japanese
pressure would be applied to the Philippines
and the small Pacific island bases of the US.
The American response, after a period of
mobilization and force concentration, would
be to re-take their own island bases, and
remove the Japanese from theirs, while US
naval forces were en route to relieve the
Philippines. The US fleet would then confront
the Imperial Japanese Navy in a fight to the
finish. Japan was then to be brought to her
knees by a naval blockade.
The Japanese, for their part, correctly
assessed the nature of the US war plan and
made their own which would allow a US fleet
to reach the Philippines, while suffering losses
from Japanese naval air and submarine
attacks along the way. This weakened fleet
would then be annihilated by the Japanese in
a great naval battle, similar to the one that the
US Plan Orange envisaged.
The development of the striking power of
the respective fleets in the 1920s and 30s was
thus crucial to the course of the war in
the Pacific. Another factor strengthening the
Japanese hand was its acquisition of mandates
from the League of Nations to govern the
former German islands of the northern and
central Pacific: the Carolines, the Marianas,
and the Marshalls. These mandates placed the
islands virtually under Japanese law but, like
all mandate holders, they were not permitted
to fortify them. Nonetheless, that is what the
Japanese did, creating a strategic barrier
through which US forces intending to relieve
the Philippines in a future war would have to
fight their way.
The Japanese became the object of US
diplomatic pressure soon after World War I.
The Americans wanted to end the Anglo-
Japanese alliance and to constrain the further
growth of Japanese naval power. Both
objectives were secured at the Washington
Naval Conference of 1921-22. The Japanese
were both humiliated and angry at this
outcome, and this in turn fed the tensions
that caused the war in the Pacific. Severe
limitations on Japanese migration to the US,
pressure to withdraw from former German
territory in China, and trade restrictions
aggravated the Japanese further during the
1920s and 30s. All of this played into the
hands of military and political leaders who
wanted to exploit Japan's naval strength in the
Pacific to create a new international order
there and in China.