 Those who accepted to join imitated the foreigners in both dress and behavior, to such an extent that it was sometimes, according to the ICTY documentation in subsequent war crimes trials, "difficult to distinguish between the two groups".For that reason, the ICTY has used the term "Mujahideen" regardless who joined the unit.Once hostilities broke out between the Bosnian government and the Croat forces (HVO), they participated in some confrontations.