What philosopher along with Alcibiades, son of Cleinias, and General Archestratus was sent too take Potidean hostages and demolish the city wall during 432 B.C.? 
Archestratus (general):  It is possible this expedition included the general Alcibiades and philosopher Socrates. Alcibiades: Alcibiades, son of Cleinias, from the deme of Scambonidae ( ; Greek: Ἀλκιβιάδης Κλεινίου Σκαμβωνίδης , transliterated "Alkibiádēs Kleiníou Skambōnídēs"; c. 450–404 BC), was a prominent Athenian statesman, orator, and general.
Socrates