Five KG V's were completed during WWII: King George V, Duke Of York, Prince of Wales, Anson and Howe. Construction of the class actully commenced in 1937.
Prince of Wales, in its fated sortie from Singapore with the Battle Cruiser Repulse, taught the the warring world a lesson which was that not even well armored, 'fast" battleships could survive determined aerial attacks (in this case from the Japanese)
Prince of Wales' AA was state of the art. Of battleship casualties the loss of Prince of Wase and Repulse, veterans both, fully operational, at sea, close to their base, but without air cover finally exposed the Battleship's vulnerability to other than other battleships. It is to be noted that Prince of Wales took 5 aerial torpedo hits before going down.
An officer of the USS Augusta, the heavy cruiser that took Roosvelt to meet Churchill aboard Prince of Wales before the Price was sent to the Far East, noted that the crew of the Prince looked war weary ( having already acquired what we would later call the 1000 yard stare) before the US had even entered the war.
I say this partially to bring perspective to our present engagement in Iraq and past engagements in Korea and Vietnam.
"All Enlightenment Gratefully Accepted"