The term 'Caesar Subject' refers to a ROMAN CITIZEN who was subject to the rule of Julius Caesar. This term is derived from the Latin word 'civis, ' which means 'CITIZEN.' Julius Caesar was a powerful ROMAN leader who rose to power in the first century BC and was responsible for many reforms and conquests. He was also known for his military campaigns, which helped expand the ROMAN Empire. The term 'Caesar Subject' is used to refer to those who were under the rule of Julius Caesar during his reign.