Complex sentence: In 1963 another disagreement would lead to the formation of JRCL Revolutionary Marxist Faction, and also bring about the name Middle Core Faction, as another way of referring to Chūkaku-ha.
Split into simpler sentences: In 1963 another disagreement would lead to the formation of JRCL Revolutionary Marxist Faction. Also this would bring about the name Middle Core Faction, as another way of referring to Chūkaku-ha.