Ancient Wisdom and Pagan Spirituality

This is a brief synopsis from The Overtake web site

"In July 1940, World War Two had been raging for almost a year. While persecuted minorities across Europe felt the force of the Nazis’ evil doctrine, Britain’s growing witch population was also driven into the shadows. The practice of witchcraft would remain a prisonable offence until 1951.

Nevertheless, the legend goes that on 31 July 1940 as Hitler prepared to invade Britain, bands of witches — known as covens — joined together in the south of England in a massive ritual aimed at blocking the Nazi advance. The power generated from the ritual — colloquially known as “The Magickal Battle of Britain” — is said to have been so intense that it killed five elderly witches in the process.

Some may point to the Spitfires as a more tangible symbol of British resistance but, either way, there is no denying the outcome. The witches’ thanks would be eleven more years of persecution.

The ritual was orchestrated by Gerald Gardner, the founding father of a strand of Wicca known as Gardnerism, and Doreen Valiente, one of Gardner’s high priestesses."

From:
https://theovertake.com/~beta/witchfest/

There are different versions of what took place, and I don't know if the story about several witches dying is true. I believe the aim was to plant the words “You cannot cross the sea,” “Not able to come,” in Hitler's mind.

another version, much more detailed, is here:

https://www.thoughtco.com/british-witches-hitler-spell-4134250