Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The Vickers-Armstrongs Valiant was a British four-jet bomber, once part of the Royal Air Force''s V bomber force.The Valiant was originally developed for use as high-level strategic bomber. When the other V-bombers came into use it was also used as a tanker. However, when the RAF moved to low-level attacks, low-level flying in the Valiant caused premature fatiguing. Rather than repair or rebuild the fleet, it was grounded and the Handley Page Victor took over the tanker role.