The Battle of Britain begins

On July 10, 1940, the Battle of Britain began as Nazi forces attacked shipping convoys in the English Channel. From the article:ed

"The Battle of Britain begins
On this day in 1940, the Germans begin the first in a long series of bombing raids against Great Britain, as the Battle of Britain, which will last three and a half months, begins.

After the occupation of France by Germany, Britain knew it was only a matter of time before the Axis power turned its sights across the Channel. And on July 10, 120 German bombers and fighters struck a British shipping convoy in that very Channel, while 70 more bombers attacked dockyard installations in South Wales. Although Britain had far fewer fighters than the Germans–600 to 1,300–it had a few advantages, such as an effective radar system, which made the prospects of a German sneak attack unlikely. Britain also produced superior quality aircraft. Its Spitfires could turn tighter than Germany’s ME109s, enabling it to better elude pursuers; and its Hurricanes could carry 40mm cannon, and would shoot down, with its American Browning machine guns, over 1,500 Luftwaffe aircraft. The German single-engine fighters had a limited flight radius, and its bombers lacked the bomb-load capacity necessary to unleash permanent devastation on their targets. Britain also had the advantage of unified focus, while German infighting caused missteps in timing; they also suffered from poor intelligence.

But in the opening days of battle, Britain was in immediate need of two things: a collective stiff upper lip–and aluminum. A plea was made by the government to turn in all available aluminum to the Ministry of Aircraft Production. “We will turn your pots and pans into Spitfires and Hurricanes,” the ministry declared. And they did."