The Enforcer: How infanteers from the Sussex Tigers enter a building without knocking

The Sussex Tigers have been knocking their way through everything in their path during a battalion exercise using a breaching tool called the Enforcer.

Reservist soldiers serving B Company, 3rd Battalion Princess of Wales's Royal Regiment (PWRR), also known as the Sussex Tigers, have been practising their door-breaching and room-clearing skills using the formidable tool.

"Our part-time soldiers from Eastbourne and Brighton spent the weekend with the battalion practising their urban combat skills, including learning how to breach doors using the Enforcer," said the PWRR on social media.  

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Also known affectionately as the Big Red Key, the Donker, Nigel, the Bosher, or the Battering Ram, the Enforcer breaching tool can be used to enter locked or barricaded rooms by military and law enforcement personnel.

The tool is made of steel, can weigh over 14kg and is based on a design developed by the London Fire Brigade.

With a length of 58cm, the Enforcer can open doors fitted with up to seven different locks, bolts or chains.

A video posted on social media shows the Tigers using the Enforcer to gain entry to a space with just one blow during training.

The regiment was named after Diana, Princess of Wales, who also acted as its joint Colonel-in-Chief until 1996.

The regiment inherited its nickname – The Tigers – from the Royal Hampshire Regiment, which was known as the Hampshire Tigers for 175 years.