The Dogs of War is a 1980 war film based upon the 1974 novel of the same name by Frederick Forsyth, directed by John Irvin. It stars Christopher Walken and Tom Berenger as part of a small, international unit of mercenary soldiers privately hired to depose President Kimba of a fictional "Republic of Zangaro", in Africa, so that a British tycoon can gain mining access to a huge platinum deposit. This movie was filmed on location in Belize City.
The title is a phrase from William Shakespeare's play Julius Caesar written in 1599; the full quotation is "Cry, 'Havoc!', and let slip the dogs of war."
(Summary from Wikipedia)