Rife with obvious errors, misspellings, and mathematical errors, as well as occasionally lacking context, it seems to me the book was written for elementary school libraries.
There are some very interesting if unknown incidents, and they are covered as well as can be expected, especially considering the dearth of information available. But the obvious errors are grating. Perhaps the worst example is the comment that David Frankfurter"had been taught to obey the 13th commandment - 'Thou Shalt Not Kill...'" How many people know that there are only TEN Commandments? Everyone? This is general knowledge. The commandment "Thou Shalt Not Murder" is the 8th Commandment in the Torah.
The number of French Jews who perished is also inconsistent (numbers given are either 60% of the total, or 70% depending on the page). Additionally, there's inconsistent numbers stated for the toll in the Warsaw Ghetto.
Misspelled names are also a worry, with Teitelboim versus Teitelbaum as listed in other historical texts and documents.
And, references to the International Brigade (singular) in the Spanish Civil War, rather than the no fewer than EIGHT International Brigades (plural) who served in Spain's Republican Army.
And other errors.
While the effort to recognize unknown battles and resistance by Jewish guerillas and partisans is admirable, the errors sadly remove a certain authority. Perhaps newer editions in the future can correct these errors.