British commandos are now literally dressing to kill as part of coalition efforts to defeat the terror group Islamic State (ISIS).

A senior ISIS commander was blasted to pieces following a recent U.S. airstrike called in by members of a British Special Air Service (SAS) team, who posed as wives of Islamic militant leaders, dressing up in burkas—the traditional attire of Muslim women—to sneak into Raqqa, the jihadist organisation's de facto capital in Syria.

Since they were covered from head to toe like Muslim women, the elite troopers were able to hide assault weapons, grenades and ammunition under their garments.

The SAS members were able to access the ISIS stronghold with the help of local Syrians who are working with the secret service to help defeat the jihadist group. The elite forces were driven to the ISIS territory using a Toyota pick-up truck, the preferred vehicle of the jihadi murderers.

Once they reached the ISIS-controlled town, the British commandos located the house of a senior ISIS leader.

They transmitted this information to a U.S. Air Force AWAC mission control aircraft circling thousands of feet above the area.

The American spy plane then fed this information to a U.S. Reaper drone, which fired within seconds a Hellfire missile into the ISIS leader's house, immediately vaporising the structure.

An anonymous source told the Daily Star that Islamic militants trooped to the streets and put the town on lockdown after the missile attack, complicating the SAS forces' mission.

"Gunmen were on the streets stopping everyone, lining people up against the walls and threatening to kill anyone who had helped the 'spies'," the source recounted, as quoted by The Express.

After the lockdown, ISIS gunmen spotted the elite forces, but the British commandos engaged them in a fierce firefight.

"Just as the British soldiers were getting back into a minivan several gunmen ordered them to stop. The troopers ignored the warnings and were about to drive off when the jihadis opened fire," the source recounted.

"The SAS jumped out of the vehicle, lifted up their burkas and opened fire. It must have been a massive shock to the gunmen. One was killed instantly and two others ran off. The firefight gave the SAS just enough time to break contact with the ISIS gunmen and escape," the source added.