There was a very recent story about the SAS running out of ammo and charging a bunch of ISIS insurgents and taking them with empty hands and knives, and winning
Your link is from a tabloid newspaper, the Daily Express, not the best place to get true articles from. It claims a 'source' and then proceeds to get mixed up. It says a soldier from the SBS actually did the drowning. The SAS and the SBS are different... the SBS the far better unit... are Royal Marine Commandos (not soldiers but itself a Spec Force) the SBS goes one step further. The only reports on this are from tabloid newspapers such as the Express, S*n and the Star ( we don't talk about the S*n as it is one of the most disgusting sewer rags). The Ministry of Defence doesn't allow troopers in the SAS to speak to the media for obvious reasons, it puts people in danger and incites terrorist attacks here. It sounds like a tremendous story but you'll find that it isn't true. The true stories you won't ever hear or read about in the media.