This article seeks to establish a clear difference between the classical vi
ew of mercenaries as hired guns and the more recent, business oriented, phe
nomenon of private security companies. The limitations of the definitions c
urrently used in international law will be explored and their impact on the
control of private military forces assessed. The article will then go on t
o identify the particular circumstances existing in Africa that provide suc
h a fertile environment for the operation of private security companies. Th
e activities of Executive Outcomes and Sandline International Ltd will be u
sed as case studies, particularly their operations in Sierra Leone. Their c
orporate connections will be highlighted, especially their links to mineral
extraction companies, and how these are used to finance their operations b
y the host countries. Finally, recent attempts to legislate to control the
activities of these companies are examined.