Shouting “Allahu Akbar” (“God is Great”) is not the only requirement a mujahid (fighter) has to fulfill to be inducted into the Islamic State (IS). He is subjected to a systematic intellectual information based on books, publications and fatwas, accompanied by military training — including physical training and training on the use of different types of weapons. Subsequent to this and an assessment stage, the mujahid will be assigned to the appropriate position...