In 1923, two brothers formed a new shoe company, Gebrüder Dassler Schuhfabrik, or Geda.

The company grew quickly against the backdrop of the rising Nazi party, and by the 1936 Berlin Olympics, top athletes, including Jesse Owens, wore the brothers' shoes.

Titus O’Reily and Mick Molloy look at how the Second World War tore the two brothers apart, leading to the biggest feud in sports history.

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Resources

There are too many resources to name for this one as it’s been a favourite for both business and sports reporters for years.

The person who has covered it the most however is Barbara Smit. She's written a few books on the topic. I’ve put the link below and highly recommend it as not just a great sports book but a great read for anyone.

Sneaker Wars: The Enemy Brothers Who Founded Adidas and Puma and the Family Feud That Forever Changed the Business of Sports by Barbara Smit

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