Here are some of his most notable works:
* "A History of Sparta" (1968): This book became a standard work on the history of Sparta, offering a comprehensive account of its political, social, and military structures.
* "The History of the Peloponnesian War: A New Translation with Introduction and Commentary" (1969): This translated edition of Thucydides' account of the Peloponnesian War is highly respected for its insightful commentary.
* "Alexander the Great" (1970): This work challenged some conventional interpretations of Alexander's career and offered a nuanced analysis of his character and achievements.
* "Greek History" (1971): This book provides a concise overview of Greek history from its origins to the Roman conquest.
* "A History of Macedonia" (1976): This comprehensive history of the ancient kingdom of Macedon remains a key reference work for scholars.
* "The Image of Alexander the Great" (1980): This book examines how Alexander's image evolved over time and analyzes different interpretations of his legacy.
* "The Trial of Socrates" (1987): This book explores the historical context of the trial of Socrates, arguing for a more nuanced understanding of the events.
* "The Athenian Experiment: Democracy, War, and Social Change" (1990): This book explores the rise and fall of Athenian democracy in the context of its social and political struggles.
In addition to these works, Forrest has also published numerous articles and essays in scholarly journals. He is considered a leading authority on ancient Greece and his work has been influential in shaping our understanding of this period.