That wasn't a war that was a genocide. Trujillo was influenced by Hitler's ideas and went to 'cleansing' the DR of darker skinned people, almost all haitians. The way he weeded out Haitians in the DR was asking people to say Parsley, since Dominicans say it different from Haitians, and then killing them. One of my dominican homeboys even admits that shit was 100 percent racist.
http://en.wikipedia.org/wiki/Rafael_Le% ... s_Trujillo
From Wikipedia
The Parsley Massacre
In pursuing
blanquismo, he ordered Dominican troops to
massacre 20,000 dark-skinned Haitian sugar cane workers in 1937, an action that he claimed was a sovereign response to the Haitian government's support of exiled Dominicans who were working to overthrow him. The US demanded that Trujillo pay reparations, which Trujillo bargained down to $500,000.
The Haitian workers were identified as immigrants, and then murdered by the truckload, if they could not pronounce the letter r in "perejil" the Spanish word for parsley. This action firmly established the Haitian-Dominican border at Río Massacre, or Massacre River (a river that was in fact named after the slaughter of French Pirates in the 17th century). He then settled the border region with Haiti, relocating Dominican families to new agricultural developments there.
US Poet Laureate Rita Dove wrote of the massacre in her poem, Parsley:
There is a parrot imitating Spring
in the palae, its feathers parsley green.
Out of the swamp the cane appears ...
El General has found his word: perejil.
Who says it, lives. He laughs, teeth appearing
out of the swamp. The cane appears
in our dreams, lashed by wind and streaming.
And we lie down. For every drop of blood
there is a parrot imitating spring.
Out of the swamp the cane appears.