of POW Bosnian Serb soldiers to Bosnian President Alija Izetbegović. Size Estimates of the mujahideen forces size vary from 500 to 6,000. In 2003, Charles R. Shrader reported that HVO general Tihomir Blaškić had estimated 3,000 to 4,000, but the actual figure would probably be closer to 2,000, based on testimonies given in the ICTY trial against Dario Kordić and . In 2004, Evan Kohlmann stated that "the deployment of Arab fighters in Bosnia who were generally loyal to the jihadi leadership in Afghanistan exploded in the mid-1990s into numbers sometimes estimated even to exceed 5,000". Stephen Schwartz stated that "up to 6,000 “Arab Afghan” volunteers arrived in the country and enlisted in combat." In 2011, Thomas Hegghammer estimated the number of foreign Muslim fighters in Bosnia to be 1,000–2,000. In 2013, the International Crisis Group estimated that "between 2,000 and 5,000 fought in BiH." In 2017, a Center for Strategic and International Studies report stated that "figures range from 500–5,000 with a preponderance of estimates in the 1,000–2,000 range", citing Hegghammer for the later estimate. Relationship to the Bosnian Army ICTY found that there was one battalion-sized unit called El Mudžahid (El Mujahid). It was established on 13 August 1993, by the Bosnian Army, which decided to form a unit of foreign fighters in order to impose control over them as the number of the foreign volunteers started to increase. The El Mudžahid unit was initially attached to and supplied by the regular Army of the Republic of Bosnia and Herzegovina (ARBiH), even though they often operated independently as a special unit. According to the ICTY indictment of Rasim Delić, Commander of Main Staff of the Bosnian army (ARBiH), after the formation of the 7th Muslim Brigade on 19 November 1992, the El Mudžahid were subordinated within its structure. According to a UN communiqué of 1995, the El Mudžahid battalion was "directly dependent on Bosnian staff for supplies" and for "directions" during combat with the Serb forces. The issue has formed part of two ICTY war crimes trials against two former senior officials in the Army of Bosnia and Herzegovina on the basis of superior criminal responsibility. In its Trial Chamber judgement in the case of ICTY v. Enver Hadžihasanović, commander of the ARBiH 3rd Corps (who was later made part of the joint command of the ARBiH and was the Chief of the Supreme Command Staff), and Amir