This "V1 weapon of despair" version 2011 is without common measure with its predecessor, however praised in its time by the specialized press. To say that it includes 60 new shots, 514 new photos and 20% more text defines only coldly and imprecisely the extent of the enrichment provided. All the chapters without exception have been reworked and supplemented, with a particular contribution to those which are devoted to the research, the development, the technique and the implementation of the weapon. To the much more complete study of the underground storages was added a more pointed approach of the 155 Flak Regiment, its organization chart, its uniforms and even its losses. The countermeasures are not forgotten, from the most realistic to the most random, sometimes throwing a very raw light on certain received ideas, images of Épinal or other myths. Finally, the summary list of sites has been completely revised and corrected to reflect the reality of the modifications on the ground. In summary, if “V1 weapon of despair” 2006 was a springboard, “V1 weapon of despair” 2011 will undoubtedly present itself as a culmination. The proof, we reprinted it for the 3rd time in 2022!