This book is written by international experts who are brownfields practitioners from over 15 countries. Blighted and contaminated properties, including military, industrial, commercial, and multi-residential properties, globally referred to as "brownfields," are a shared phenomenon among NATO and NATO-partner countries. They provide practical solutions to addressing, evaluating, and cleaning up brownfields, including multiple case studies. Topics include reuse of military brownfields, sustainable site reuse, community engagement, risk assessment, impacts of the war in Ukraine related to military brownfields development and redevelopment, a free training to improve capacity to evaluate environmental and health risks of brownfields, and shared best practices.