When we reflect upon the brutal vices of these salt-water bandits, pirates as shameful as any whom the sea has borne, or recoil from their villainous destruction and cruel deeds, we must also remember the discipline, the fortitude, the comradeship and martial virtues which made them at this period beyond all challenge the most formidable and daring race in the world.
Churchill presents a deliberately balanced assessment of the Viking raiders. He condemns their piracy, destruction and violence, but argues that these actions should not obscure the qualities that made them militarily formidable. Discipline, endurance, comradeship and courage helped them travel great distances, conduct repeated raids and challenge established powers across Europe.
The passage distinguishes between judging conduct and recognising capability. A group can be effective, organised and courageous while also committing acts that deserve condemnation. Churchill’s language is strongly evaluative and reflects the historical writing of his period, but the underlying method is broader: understanding the strengths of historical actors does not require approving their aims or behaviour. The quotation can therefore be read as an argument for examining both moral consequences and practical effectiveness when assessing warfare, leadership and historical reputation.