Brandishing AK47 assault rifles and waving flags carrying the sinister black and white ISIS logo, the photographs showing the “jihadi” 'Class of 2015' are believed to have been taken in Raqqa city.

Although they are dressed in head-to-toe black and wear balaclavas that cover most of their faces, it is clear that the majority of the graduates are teenagers who have been brainwashed into thinking they are holy warriors, when the reality is they will be used as little more than cannon fodder, MAIL ONLINE reports.

A senior militant is seen giving the “jihadi” graduates a final lecture before they are sent off to wage terror in the various provinces - known as wilayats - under the control of the ISIS.

In a courtyard outside the school the newly-graduated fighters march in highly choreographed formations, still brandishing assault rifles and with their faces still covered by black balaclavas.

While hardened militants with experience of warfare and knowledge of battlefield strategy may be of use to ISIS, the vast majority of new recruits - especially teenagers and foreign fighters - are used as little more than cannon fodder during an assault or for suicide bomb attacks.

Others are kept far from the frontline and given mundane jobs such as guards or toilet cleaners that are a far cry from propaganda images portraying ISIS membership as a life of glory and honor.