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Just one week after D-Day, the British 22nd Armored Brigade was making good progress through the French countryside, liberating the country and pushing the German invaders back. Then, in a classic British move, they stopped in a Normandy village called Villers-Bocage for a tea break. Out came the smokey old “Benghazi burners,” and on went the kettles. Unfortunately, the Germans, well aware of the British love for tea time, ambushed them, destroying 14 British tanks in 15 minutes. Turns out, tea might have been their Achilles’ heel.

After the June 13th, 1944 ambush, British commanders knew they needed a fix—because skipping tea wasn’t an option. Enter the boiling vessel (BV): a specially designed morale-boosting contraption fitted in British tanks that lets soldiers brew up mid-battle. Since then, all British tanks have come with a built-in kettle for tea (and rations)—perfect for those high-stakes, mid-war cuppas.

It’s a topic the internet can’t get enough of—everyone from Redditors to TikTok stars have been fascinated by these onboard kettles. As a viral TikTok video from the “RandomFactOlogy” account cheekily shows, “Yes, British soldiers take tea that seriously!” But here’s where most of those videos get it wrong: the device isn’t just for tea. Built by Electrothermal Industries, the RAK Water & Ration Heater also serves up piping hot MREs. Officially classified as a “water and ration heater,” it’s designed for more than just a cuppa.

But why are the British so obsessed with tea? It’s not just a drink—it’s a national identity. Since the 17th century, tea has been more than a beverage in Britain. Initially a luxury of the upper class, it eventually spread through all classes, becoming a symbol of British resilience and culture. In fact, British workers have the legal right to a tea break during long shifts—a testament to how deeply tea is steeped into British life (pun intended).

The military’s relationship with tea dates back to its empire-building days. In India, for example, compressed tea was favored in military campaigns to make transport easier, a revolutionary change from the bulky loose-leaf tea. As historian Brian Wolfe noted, this innovation showed just how essential tea was for the British—so much so that even soldiers in remote Indian jungles could have their cuppa.

Fast forward to today, and the RAK Water & Ration Heater is the modern version of that portable tea convenience. Soldiers can brew hot water for tea or heat their meals without compromising the taste of their beloved beverage. Want proof? Watch Corporal Mark Bulbeck of the King’s Royal Hussars demonstrate how the RAK keeps morale high in the thick of battle.

And with that, we can tea-up the viral video below. Ready to watch how the British Army makes sure their soldiers never go without tea? Play on: