Christopher Duffy (1936 – 16 November 2022) was a British military historian.
Duffy read history at Balliol College, Oxford, where he graduated in 1961 with the DPhil. Afterwards, he taught military history at the Royal Military Academy Sandhurst and the college of the British General Staff. He was secretary-general of the British Commission for Military History and vice-president of the Military History Society of Ireland. From 1996 to 2001, he was research professor at the De Montfort University, Leicester. He then worked as a freelance author.
Duffy's special interest was the military history of the European modern age, in particular the history of the German, Prussian, and Austrian armed forces. He wrote two books on the Jacobite Rising in Scotland in 1745. He was most famous for his writings about Frederick the Great and the Seven Years' War. Duffy was fluent in six languages and published some twenty books about military history topics, several of which have been translated into German.
Duffy died on 16 November 2022, at the age of 86.[1][2]