Complex sentence: The Spartans were composed of two "morai" (μόρα, the largest tactical unit in ancient Spartan armies), led by Gorgoleon and Theopompus, and outnumbered the Thebans at least two to one.
Split into simpler sentences: The Spartans were composed of two "morai" (μόρα, the largest tactical unit in ancient Spartan armies) led by Gorgoleon and Theopompus. They outnumbered the Thebans at least two to one.