Complex sentence: The 7th brigade had over 1,000 local soldiers and was a part of the 3rd Corps of the Bosnian Army, while El-Mudžahid was an independent detachment.
Split into simpler sentences: The 7th brigade had over 1,000 local soldiers and was a part of the 3rd Corps of the Bosnian Army. The El-Mudžahid was an independent detachment.