Perdiccas and 200 of his cavalry joined with Aristeus , and their combined army marched to Potidaea .
After some fighting against Perdiccas , the combined Athenian forces sailed to Potidaea and landed there .
Perdiccas and 200 of Perdiccas ' cavalry joined with Aristeus , and their combined army marched to Potidaea .
After some fighting against Perdiccas , the combined Athenian forces sailed to Potidaea and landed there .