Operation Berlin gave Britain a practical catalogue of its reconnaissance and reporting failures. By the time Bismarck sailed, more aircraft and better-worked search arrangements were available, while the German force again consisted of one main capital ship rather than a concentrated group. Bismarck was individually more powerful than either Scharnhorst or Gneisenau, but British planners could form pairs and carrier-supported hunting groups around that single threat. Berlin's apparent success encouraged Germany to attempt Rheinübung even though the earlier raid had left its other battleships under repair. Those lessons and the force imbalance made the later operation still more likely to fail.
Chapter · 3:00:43-3:03:12
Operation Berlin made Rheinübung harder to repeat successfully
Berlin exposed British search weaknesses but also taught Britain how to close them, while German machinery losses left Bismarck to face the improved response alone.