- _The Founding Fathers and Their Wars for Freedom_ (two volumes, 1973)
- _The American Revolution_ (1980)
- _The French Revolution_ (1981)
- _The Spanish Armada_ (1983)
- _The Thirty Years' War_ (1984)
- _A History of Europe Since the Reformation_ (1986)
- _The Enlightenment_ (1990)
- _Napoleon Bonaparte: A Brief Biography_ (1995)
- _The German Wars of Liberation_ (1996)
- _The Cold War: A Brief History_ (1997)
- _The History of the Catholic Church_ (two volumes, 1998)
- _A History of the German People_ (1999)
- _The History of the United States Since 1945_ (2001)
- _A History of World War I_ (2002)
- _A History of World War II_ (2003)
- _The History of the Middle East: A Brief Introduction_ (2004)
- _The Holocaust: A Brief History_ (2005)
- _The History of Ancient Greece_ (2006)
- _The History of Ancient Rome_ (2008)
- _A History of the European Union_ (2008)