This work investigates the legal, political, and operational frameworks governing the presence of United States military forces within independent sovereign nations since 1945. C. T. Sandars, drawing upon extensive research into international agreements and defense policy, examines the evolution of the American global military footprint. The author argues that the U.S. maintains a unique 'leasehold empire' that functions distinctly from the territorial acquisitions of historical colonial powers. By analyzing specific bilateral treaties and status-of-forces agreements, the text provides a comprehensive overview of how the Pax Americana is sustained through negotiated access rather than direct annexation.

Experts recognize this text as a foundational resource for understanding the mechanics of post-WWII American global power projection. Readers frequently note the academic rigor and the clarity with which the author navigates complex international legal frameworks.