Year 313 BC was a year of the pre-Julian Roman calendar

Roman calendar

The Roman calendar changed its form several times in the time between the founding of Rome and the fall of the Roman Empire. This article generally discusses the early Roman or pre-Julian calendars...

. At the time, it was known as the Year of the Consulship of Cursor and Brutus (or, less frequently, year 441 Ab urbe condita

Ab urbe condita

Ab urbe condita is Latin for "from the founding of the City ", traditionally set in 753 BC. AUC is a year-numbering system used by some ancient Roman historians to identify particular Roman years...

). The denomination 313 BC for this year has been used since the early medieval period, when the Anno Domini

Anno Domini

and Before Christ are designations used to label or number years used with the Julian and Gregorian calendars....

 calendar era

Calendar era

A calendar era is the year numbering system used by a calendar. For example, the Gregorian calendar numbers its years in the Western Christian era . The instant, date, or year from which time is marked is called the epoch of the era...

 became the prevalent method in Europe for naming years.

Egypt

• Ptolemy
  Ptolemy I Soter
  Ptolemy I Soter I , also known as Ptolemy Lagides, c. 367 BC – c. 283 BC, was a Macedonian general under Alexander the Great, who became ruler of Egypt and founder of both the Ptolemaic Kingdom and the Ptolemaic Dynasty...
  
  , whose Egyptian
  Ancient Egypt
  Ancient Egypt was an ancient civilization of Northeastern Africa, concentrated along the lower reaches of the Nile River in what is now the modern country of Egypt. Egyptian civilization coalesced around 3150 BC with the political unification of Upper and Lower Egypt under the first pharaoh...
  
   kingdom includes Cyprus
  Cyprus
  Cyprus , officially the Republic of Cyprus , is a Eurasian island country, member of the European Union, in the Eastern Mediterranean, east of Greece, south of Turkey, west of Syria and north of Egypt. It is the third largest island in the Mediterranean Sea.The earliest known human activity on the...
  
  , puts down a revolt there. A revolt in Cyrene
  Cyrene, Libya
  Cyrene was an ancient Greek colony and then a Roman city in present-day Shahhat, Libya, the oldest and most important of the five Greek cities in the region. It gave eastern Libya the classical name Cyrenaica that it has retained to modern times.Cyrene lies in a lush valley in the Jebel Akhdar...
  
   is also crushed.

Greece

• Becoming tired of the Macedon
  Macedon
  Macedonia or Macedon was an ancient kingdom, centered in the northeastern part of the Greek peninsula, bordered by Epirus to the west, Paeonia to the north, the region of Thrace to the east and Thessaly to the south....
  
  ian rule, the people of Epirus
  Epirus
  The name Epirus, from the Greek "Ήπειρος" meaning continent may refer to:-Geographical:* Epirus - a historical and geographical region of the southwestern Balkans, straddling modern Greece and Albania...
  
   recall their former king Aeacides. Cassander
  Cassander
  Cassander , King of Macedonia , was a son of Antipater, and founder of the Antipatrid dynasty...
  
   immediately sends an army against him under his brother, Philip
  Philip (general)
  Philip was son of Antipater, the regent of Macedonia, and brother of Cassander, by whom he was sent in 313 BC, with an army to invade Aetolia. But on his arrival in Acarnania the news that Aeacides, king of Epirus, had recovered possession of his throne, induced him to turn his arms against that...
  
  , who is diverted from invading Aetolia
  Aetolia
  Aetolia is a mountainous region of Greece on the north coast of the Gulf of Corinth, forming the eastern part of the modern prefecture of Aetolia-Acarnania.-Geography:...
  
  .
• Philip defeats Aeacides in a battle. Aeacides, with the remnant of his forces, joins the Aetolians. A second battle takes place, in which Philip is again victorious, and Aeacides is killed. The remaining Aetolian army takes refuge in the surrounding mountains.