Taking an example from the British MoD, ISIS are to form Reserve Units of 'The Brothers' in the UK, volunteers will fly out to Syria or Iraq on the Friday evening and return on the Monday morning. As Ryan Air are said to be charging hefty prices for extra baggage, especially assault rifles, grenades and rocket launchers, ISIS have said that these will picked upon arrival in Iraq.
In theatre preparation will involve a few ritual decapitations followed by random firing into the horizon. Volunteers with psychiatric problems will then be given a number of people to beat senseless before shooting them through the back of the head.
An advantage for ISIS is that on return to the UK, injured people may get free help on the NHS. It is believed that a special covert minicab service will be operating in the UK to take volunteers to and from their homes to the airport.