"Commentary of Colonel Francisco Verdugo on the War in Friesland, for fourteen years he was the head and captain-general of that region and of the army in the service of King Philip II, our lord" is a book reflecting the important events and decisions made during the military operations in Friesland. The author of this historical confession is Francisco Verdugo himself, who is first-rate familiar with military strategies and the difficulties of managing military forces. In his book, he reveals and highlights the key points of his work in Frisia, sharing valuable military and strategic insights. By detailing the period of his reign and leadership, Verdugo provides the reader with an opportunity to confirm his ingenuity and professionalism in the field of military affairs."