The Imperial Infantryman's Uplifting Primer
The Imperial Infantryman's Uplifting Primer is a small book supplied to an Imperial Guardsman on commencement of service, he is required to have it on or close to his person at all times, not being able to produce it on the demand of a senior officer is a disciplinary offense. It shows the likely enemies that will be faced, with morale boosting, if not entirely accurate (eg. Genestealer: Puny Blunt Claws) information upon them. It also describes in detail the Guardsman's equipment, and how to keep it in good functional working order. It also details Imperial Guard armour units, such as the Chimera, Leman Russ Battle Tank and their variants.
It is not to be taken to the front line, and is to be kept out of the hands of the enemy at all costs.
BL Publishing created a retail version of The Imperial Infantryman's Uplifting Primer in 2003. It was written by Matt Ralphs and is now out of print.