Admiral Scheer underwent a refit while her sister ships set out on commerce raiding operations in the Atlantic.[17] Admiral Scheer was modified during the early months of 1940, including the installation of a new, raked clipper bow.[16] The heavy command tower was replaced with a lighter structure, and she was reclassified as a heavy cruiser.[12] Additional anti-aircraft guns were also installed, along with updated radar equipment.[16] On 19–20 July RAF bombers attacked Admiral Scheer and the battleship Tirpitz, though they failed to score any hits.[18] On 27 July, the ship was pronounced ready for service.[16]