On August 7, 1942, U.S. forces, primarily the 1st Marine
Division, launched Operation Watchtower, the first major
Allied offensive in the Pacific during World War II, by
landing on Guadalcanal.
The initial landings were relatively unopposed, with the
primary objective of seizing a Japanese airfield under
construction.
This airfield, later named Henderson Field, became a
crucial strategic point in the Pacific campaign. The
invasion marked the beginning of the lengthy and
brutal Guadalcanal Campaign, a six-month struggle
for control of the island.

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