From World War II at Sea, by Craig L. Symonds (Oxford U. Press, 2018), Kindle pp. 57-60:
Mackesy, with the rest of the Narvik invasion force, landed at Harstad, near Narvik, on April 15. There was more than a little confusion getting ashore, and the landings took longer than anticipated. In one case, it took five days to unload two ships, and meanwhile German aircraft continued their harassing attacks. The Furious, along with the newly arrived Glorious, flew two squadrons of British aircraft ashore, but they had little luck against the Luftwaffe, which claimed six British ships. Pressured by Churchill, [Admiral of the Fleet Lord] Cork urged Mackesy to undertake a land assault, but Mackesy, whose troops were floundering in snow up to their waists, was not to be hurried, and instead began a slow encirclement of the city. As he had with Forbes, Churchill then pressed Cork to undertake a bombardment of the town with his big ships. Cork did so on April 24, though with little effect. By the end of the month the British, French, and Poles had thirty thousand men in the Narvik area, yet the Germans continued to hold the town.
Even as the allied buildup continued, unambiguous intelligence began to arrive in London that a far more serious buildup was taking place on the Continent, where German armored divisions were gathering along the border with France and Belgium. Though the land war in Europe had remained quiescent since the fall of Poland in September, it now appeared that the Germans were about to initiate a major offensive. That led Chamberlain and the rest of the cabinet, including Churchill, to wonder if the Royal Navy was not overextended in Norway. As early as April 24, the day that Cork’s naval forces bombarded Narvik, the cabinet secretly voted to terminate the Norway campaign. The government shared this decision with the French, though they did not tell the Norwegians.
In the first week of May, Chamberlain called for a vote of confidence from the House of Commons. Somewhat defensively, he asked members “not to form any hasty opinions on the result of the Norwegian campaign,” which by now had become an apparent quagmire. Chamberlain narrowly won the vote but, recognizing that a change in government might revitalize British morale, he resigned anyway. Most of the errors of the Norwegian campaign could be traced to Churchill’s unfortunate meddling, but his reputation as an ardent and unyielding foe of Nazism (which he often pronounced as if it derived from the word “nausea”), made him the only suitable candidate as Chamberlain’s successor, and on May 10, the king asked him to form a government. As prime minister, Churchill also kept the portfolio of defense minister in his own hands, and of course he continued to exercise significant influence over naval affairs, so throughout the war he had near complete dominance of military and naval strategy as well as government policy.
On that same May 10, German armored columns, backed up by tactical aircraft, charged across the frontiers of France and Belgium. The swiftly unfolding campaign in France necessarily became Churchill’s most immediate priority, though he still hoped to complete the capture of Narvik before withdrawing from Norway. In part, he wanted to destroy the ore piers and railroad facilities there, but he also hoped that the seizure of Narvik would somehow validate the decision to go into Norway in the first place, which would demonstrate that the campaign had not been a complete failure—another Gallipoli. He replaced the cautious Mackesy with the more energetic Claude Auchinleck, and pressed Lord Cork to “get Narvik cleaned up as soon as possible.”
The Allied ground attack on Narvik took place on May 27. Hitler ordered the German defenders to fight to the last man, though they withdrew inland instead, destroying the railroad tunnels as they did so, thus actually aiding the British objective of making Narvik all but useless as an ore terminal. By the next day, Narvik was at last in British hands, though by then its importance had been overwhelmed by events elsewhere, and almost immediately the British prepared to evacuate not only Narvik but all of Norway. Norway’s King Haakon VII accepted a British offer to carry on a government in exile and was spirited out of Tromsø (along with fifty tons of Norway’s gold reserves) on June 1. At least as important, a handful of Norwegian warships and more than a thousand merchant vessels joined him. Given the worldwide dearth of shipping—on both sides—that was a significant boost to the British war effort.
Admiral Raeder had achieved his goal. Norway—or at least the principal port cities of Norway—had been occupied. To accomplish it, however, he had risked most of his surface navy and it had been severely crippled. Three cruisers, including the brand-new Blücher, and all ten of the destroyers sent to Narvik plus a dozen other ships had been sunk, and nearly every major combatant that survived the campaign had been damaged. By June 1940, the Kriegsmarine had fewer than a dozen surface combatants that were fit for service, and it no longer posed a meaningful threat to the Royal Navy in the North Sea or anywhere else. Raeder was also disappointed by the political outcome in Norway. From the start he had hoped that once the shooting stopped, it would be possible to adopt “a warm and friendly attitude” toward the Norwegians. Instead, Hitler’s appointed deputy treated Norway as a conquered province, a circumstance that gnawed at Raeder, who repeatedly tried to convince Hitler to adopt a more conciliatory policy, though with no success.
Finally, and ironically, the circumstances that had made Norway important enough to justify risking the entire German navy changed dramatically almost immediately. Once the Wehrmacht overran France, Dönitz’s U-boats obtained access to French ports on the Atlantic, which made those in Norway of little value, and the seizure of the enormous iron mines in French Lorraine made the mines in northern Sweden far less important. In the end, despite what looked to many like a German victory, Raeder had risked everything, lost much, and gained little.
The British, too, lost much in the Norway campaign, and for them there was one more tragedy to endure. On June 8, the aircraft carrier HMS Glorious, accompanied by two destroyers, Ardent and Acasta, was returning to Britain from the evacuation of Trondheim. The Glorious had just recovered a squadron of Hurricane fighters from Norway that had managed to get aboard despite the fact that RAF planes lacked trailing hooks to catch the arrester wires. With her deck crowded with the Hurricanes, she had no fighters aloft when the Scharnhorst and Gneisenau suddenly appeared on the horizon. Raeder had sent the battlecruiser twins to sea four days earlier under Wilhelm Marschall with orders to attack British shipping off Narvik. Though it was too late for that, Marschall stumbled into an unforeseen opportunity. With the Hurricanes crowding her flight deck, the crew of the Glorious could not get any fighters or bombers aloft. There was no explanation at all, however, for the fact that there were no topside lookouts on duty that day; the captain of the Glorious, Guy D’Oyly-Hughes, did not even order general quarters until twenty minutes after the German warships were in sight. The result was that the Glorious achieved the inglorious distinction of being the first aircraft carrier in history to be sunk by surface gunfire. Only thirty-four minutes after the Scharnhorst opened fire, the Glorious rolled over onto her starboard side and went down.