Although a lot has been written (mainly in German) about field post in the German army during the Second World War and the many historiographical issues concerned with it, very little study has been devoted to the letter collections of the German generals. This chapter attempts first to consider this unique collection of sources and discuss where they have been used before and to what end. There is also a discussion about why they have not been used more generally in past operational histories. The problems with Kurrentschrift, and even the standardised Sütterlinschrift, are explained to make readers aware of the complexity inherent in tackling letters from a generation of men educated in the late nineteenth century. Another major focus of the chapter are issues concerned with veracity and verification of the correspondence. A statical analysis of each collection provides a remarkable insight into anomalies, which reveals that letters are missing (or were withheld) from the publicly available collection. This is an important qualification of the study and already points to an attempt by the generals to present a selective post-war image.