Many of his dispatches to Madrid were first deciphered only in the Simancas archives by De Lamar Jensen; they revealed, for the first time, Mendoza's role in organising and co-ordinating the Paris riots led by the Duke of Guise, known as the Day of the Barricades (12 May 1588), which had been presented as a spontaneous rising of the people and timed to coincide with the sailing of the Spanish Armada. Among Mendoza's public writings is a famous account of the war in the Low Countries that is entitled "Comentario de lo sucecido en los Paises Bajos desde el año 1567 hasta el de 1577". Bernardino also published a book on the art of warfare, under the title "Theórica y práctica de la guerra" and a Spanish translation of the "Politicorum sive civilis doctrinae libri sex" of the Flemish philosopher Justus Lipsius.