History
In
111 BC ancestors of the present-day Vietnamese who inhabited part of
what is now southern China and northern Vietnam were conquered by forces
of China's Han dynasty. Chinese rule lasted more than 1000 years (until
939 AD) when the Vietnamese ousted their conquerors and began a southward
expansion that, by the mid 18th century, reached the Gulf of Siam. Despite
their military achievements the Vietnamese continued to suffer from
internal political divisions. Throughout most of the 17th and 18th centuries,
contending families in the north and south struggled to control the
powerless kings of the Le dynasty.
Vietnam was reunited following a devastating civil war in the 18th century
but soon fell prey to the expansion of European colonialism. The French
conquest of Vietnam began in 1858 with an attack on what is now the
city of Danang.
Fiercely
nationalistic, the Vietnamese never truly accepted the imposition of
French rule. By 1930, the Vietnamese Nationalist Party had staged the
first significant armed uprising against the French, but its virtual
destruction in the ensuing French repression left the leadership of
the anti-colonial movement to those more adept at underground organization
and survival - the communists.
A
prolonged three-way struggle ensued among the Vietnamese communists
(led by Ho Chi Minh), the French, and the Vietnamese nationalists (nominally
led by Emperor Bao Dai). Ho Chi Minh's Viet Minh forces fought a highly
successful guerrilla campaign and eventually controlled much of rural
Vietnam. The French military disaster at Dien Bien Phu in May 1954 and
the conference at Geneva, where France signed the Agreement on the Cessation
of Hostilities in Vietnam on July 20, 1954, marked the end of the eight-year
war and French colonial rule in Indochina.
By
1963 the Vietnamese communists had made significant progress in building
a strong network of supporters in South Vietnam. Nevertheless, in 1964
Hanoi decided that the Viet Cong (VC) cadres and their supporters were
not sufficient to take advantage of the political confusion following
the overthrow of Diem in November 1963. Hanoi ordered regular troops
of the North Vietnamese army (People's Army of Vietnam - PAVN) into
South Vietnam, first as ‘fillers’ in VC units, then in regular
formations. The first regimental units were dispatched in the autumn
of 1964. By 1968, PAVN forces were enduring most combat on the communist
side.
In December 1961 President Diem requested assistance from the United
States. President Kennedy sent US military advisers to South Vietnam
to help the government deal with the instability that plagued the southern
part of Vietnam. By the spring of 1969 the United States had reached
its greatest troop strength - 543,000 - in Vietnam.
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