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The Field of Mars is the location where Roman War Games are carried out at Camp Jupiter. It is located north-east of the via principia.

The Heroes of Olympus

The Son of Neptune

The game Siege (similar to Capture the Flag) is played on the field. A team of builders create a large fort for the defending team while the attacking team have Hannibal the elephant. After the game is completed, Mars appears on the field and claims his son, Frank Zhang, also giving him a quest in the process.

The Mark of Athena

The field is seen by Annabeth Chase while the Argo II is flying towards New Rome.

The Trials of Apollo

The Tyrant's Tomb

Apollo waits in the Field of Mars for Hazel Levesque, Meg McCaffrey, and Lavinia Asimov to arrive and set out for the their quest. While he waits he talks with Frank when the son of Mars brings Hannibal to get some fresh air.

Camp Jupiter Classified: A Probatio's Journal

Claudia and Janice participate in the War Games on the field.

Camp Jupiter
Camp Jupiter: Bathhouse | Bombilo's Coffee Shop | Camp Borders | Camp Jupiter Aviary | Camp Jupiter Stables | Circus Maximus | Cohorts | Coliseum | Cyclops Books | Field of Mars | Garden of Bacchus | Little Tiber | New Rome | New Rome University | Mess Hall | Neptune's Shrine | Pluto's Shrine | Praetorium | Principia | Senate House | Temple Hill | Temple of Bellona | Temple of Diana | Temple of Jupiter Optimus Maximus | Temple of Mars | Temple of Mercury | Via Praetoria | Via Principalis