Note: X and Y are coordinates (light years on XY plane) relative to Terra at (0, 0)
X: 365.91 Y: 303.65 [e]
 Owner History
- 2240 - Independent world 
- 2596 - Federated Suns 
- 2750 - Federated Suns 
- 2765 - Federated Suns 
- 3130 - No record 
 Planetary Histoy
 Early History
Arcadia was once one of the "garden worlds" of the Crucis March region of the Federated Suns, settled during the early exodus from Earth; even after the Demarcation Declaration of 2240, Arcadia remained a prosperous, peaceful world. While nearby New Avalon was a struggling, strife-ridden world during the birth of the Federated Suns, Arcadia was a world blessed with abundent raw materials, extensive agriculture - fed by the plentiful water available - and a booming industrial economy.
Seventy years after the birth of the Federated Suns, the ruling line of the realm, the Davions, united their world with Arcadia when Prince Paul Davion of New Avalon married Marge Svensdottar of Arcadia in 2378. It wasn't the last time scions of the Davion family would marry into the Arcadian nobility; Edward Davion married an Arcadian socialite in the early 25th century - although that wouldn't stop the leader of Arcadia joining the November Conspiracy in 2417 in an attempt to replace Edward with another, more stable ruler.
 Succession Wars
Arcadia is no longer a bustling pillar of strength within the Federated Suns; the 1st Succession War saw the Draconis Combine ravage the Federated Suns, their offensive coming within a single jump of New Avalon... that single jump being measured from Arcadia. The Combine forces never made it any further than Arcadia, as the beleagured Armed Forces of the Federated Suns rallied to drive the invaders back in a long, slow and brutal campaign... and the fighting on Arcadia was as brutal as any. By the end of the 1st Succession War, Arcadia was a dead world.
Interstellar Expeditions sent an expedition to Arcadia in 3068 to test their theory that Arcadia was Taussen, one of the Hidden Five worlds held by the Word of Blake. The expedition found nothing to indicate that this was the case. All they found were ruins and large zones of radiation.
It was confirmed by Øystein Tvedten, one of the Catalyst Game Labs BattleTech Developers, that Arcadia died in the 1st Succession War and was the closest world to New Avalon the DCMS attacked:
|“||Arcadia die due to heavy fighting there during the 1st Succession War. It was as far as the DCMS came in their drive to New Avalon (one jump away). The fighting there wasn't pretty.||”|
|— Øystein Tvedten, Catalyst Game Labs BattleTech Developer, 15 Jul 2011|
- ↑ 1.0 1.1 House Davion: The Federated Suns, p. 22, "The Prime Ministers"
- ↑ Historical: Reunification War, p. 159, "Inner Sphere - 2596"
- ↑ Era Report: 2750, p. 37, "Inner Sphere - 2750"
- ↑ Historical: Liberation of Terra Volume 1, p. 11, "Inner Sphere - 2765"
- ↑ Map of the Inner Sphere 3130
- ↑ House Davion: The Federated Suns, p. 30, "A Noble Effort"
- ↑ House Davion: The Federated Suns, p. 31, "Twin Tyrants"
- ↑ House Davion: The Federated Suns, p. 32, "Death Of A Tyrant"
- ↑ , Øystein Tvedten, Catalyst Game Labs BattleTech Developer, 15 Jul 2011
- ↑ Interstellar Players 3: Interstellar Expeditions, p. 22