Complex sentence: The elite of the Rifian forces formed regular units which according to Abd el-Krim, quoted by the Spanish General Manual Goded, numbered 6-7,000, and other sources put it much lower, at around 2,000 to 3,000.
Split into simpler sentences: The elite of the Rifian forces formed regular units which according to Abd el-Krim, quoted by the Spanish General Manual Goded, numbered 6-7,000. Other sources put it much lower, at around 2,000 to 3,000.