The necessity of some special Sign to distinguish Individuals, Tribes, and Nations--the Standards of Antiquity--Egyptian, Assyrian, Persian, Greek, and Roman--the Vexillum--the Labarum of Constantine--Invocation of Religion--the Flags of the Enemy--Early Flags of Religious Character--Flags of Saints at Funeral Obsequies--Company and Guild Flags of the Mediæval Period--Pol...