Complex sentence: Bendjedid, who had collaborated with Boumediene in the plot that deposed Ben Bella, was regarded as a moderate not identified with any group or faction; he did, however, command wide support within the military establishment.
Split into simpler sentences: Bendjedid, who had collaborated with Boumediene in the plot that disposed of Ben Bella, was regarded as a moderate, not identified with any group or faction. He did, however, command wide support within the military establishment.