The Philological and Historical Commentary to Ammianus Marcellinus'
Res Gestae is the standard and the only complete commentary on
Res Gestae. It is of great importance to scholars in Roman history, Latin philology, military history and historiography in general.
After the diligent work of P. de Jonge, who wrote commentaries on books 14-18 from the 1930s till the 1980s, J. den Boeft, D. den Hengst, H.C. Teitler and, starting 1991, J.W. Drijvers have steadily worked on the commentaries to the remaining books 19-31 of Res Gestae. Their collaborative work has received much praise in the international scholarly world, and has been completed in 2018.