Barbarian Migrations
First World War Part I
1491
China Marches West
Transformation of European Politics
Battle Cry of Freedom
Thirty Years War: Europe's Tragedy
Iron Kingdom
Power and Plenty
History of the Byzantine State and Society
Alexander to Actium
To Dach's fine list I would like to add The Making of the Atomic Bomb by Richard Rhodes (1986). This is a highly readable and detailed account of one of the greatest and melancholy achievements of science in the 20th century. It's been highly praised and has won numerous awards including the 1988 Pulitzer Prize for General Non-Fiction(BCoF, Hist-1989).