Such bias is probably relevant for articles estimating current military strength, or evaluating national strategy, and so on; topics where you need judgment to

Such bias is probably relevant for articles estimating current military strength, or evaluating national strategy, and so on; topics where you need judgment to make sense of ambiguous data. But I don't see why you would think this article should be distrusted. It just describes a historical event, which was widely covered by newspapers at the time.