Heir to the Empire trilogy, a.k.a. The Thrawn trilogy by Timothy Zahn (in Dutch). Read them and owned them in 1996 and 1997. Lend them out around the 2000s, but forgot to whom....
The untold story of the academics who became OSS spies, invented modern spycraft, and helped turn the tide of the war At the start of WWII, the U.S. found i...