The other two books are suitable for key stage 2. Julie Ferris's Viking World is set out as a travel guide. Using photos and artwork, it tells travellers howto dress, what to eat and how to shop for souvenirs. Accommodation in a long house may be hot and crowded, but drunken feasts and poetic frenzies can be entertaining. A raiding party or a visit to a colony are also eloquently promoted. The book is a fun "guide" to Viking life, and the supporting information is used reliably and presented with clarity.
Christopher Gravett's Going to War in Viking Times focuses on axe-blades, feuds and "blood money". Attractive pages on the gods of battle and their talismans include explanations involving sagas, Valkyries and Valhalla. The book offers explanation as well as exposition, giving space to the causes as well as the methods of raiding.
Domestic virtues are mentioned, but battles are more to the fore.