Piotr Wróbel writing for Shofar: An Interdisciplinary Journal of Jewish Studies noted that the book is "a major achievement and explains many historical events misunderstood by Western readers".
[2] John Radzilowski in The Historian wrote that the book is "a welcome and useful corrective for both scholars and general readers" and "an important addition to English language literature on East-Central Europe in World War II".
[5] Jan Grabowski in the Israel Journal of Foreign Affairs was more critical of the book, writing: "In addition to very problematic interpretations and insufficient or biased sources, The Eagle Unbowed is replete with factual errors...Those, however, who look for well-informed studies... will have to look elsewhere.
[7] Janusz R. Kowalczyk writing for culture.pl called it "the first comprehensive account of the fate of Poles on the fronts and wastelands of Second World War published in the West".
[10] Wojciech Michnik in New Eastern Europe called the book a "monumental study" and "an extremely interesting and timely read".