The Wikipedia article of the day for July 17, 2016 is Operation Mascot.
Operation Mascot was an unsuccessful British air raid on the German battleship Tirpitz which took place during the early hours of 17 July 1944. One of a series of aircraft carrier strikes between April and August 1944 against the battleship at anchor in Kaafjord, Norway, the raid was conducted by 44 British dive bombers and 40 fighters from three carriers. They were detected en route by German radar stations, and Tirpitz was protected by a smoke screen by the time they arrived. Few of the British airmen were able to spot the battleship, and their attacks did not inflict any significant damage. German losses were limited to a patrol craft damaged beyond repair; three British aircraft were destroyed or damaged beyond repair by Kaafjord's defenders. Two U-boats from a group attempting to intercept the carrier force were sunk by British patrol aircraft, and several others were damaged. Despite the failure of Operation Mascot, the Royal Navy attempted four further carrier raids against Tirpitz during August 1944. These attacks were also unsuccessful, and the task of sinking the battleship was transferred to the Royal Air Force.