Complex sentence: His militia rarely fought those Siyad Hussein, Col. Omar Jess, Ahmed Hashi which also operated in this region; instead they devoted most of their energies to preying upon IDPs and refugees.
Split into simpler sentences: His militia rarely fought those Siyad Hussein, Col. Omar Jess, Ahmed Hashi which also operated in this region. Instead, they devoted most of their energies to preying upon IDPs and refugees.