- 1 Character History
- 2 Note
- 3 References
- 4 Bibliography
Early Life and Career
Jon Davion, was the older cousin of Jackson Davion, he was military history instructor at the Sakhara Academy prior to the FedCom Civil War. Jackson, would influence him to return to service and leave his teaching career behind. He would then become the commanding officer of the Davion Heavy Guard after rejoining the AFFC. After assuming the command of the Heavy Guards, he would reorganized Guard's Armor components to more effective fighting force.
FedCom Civil War
In 3063, Jon's Heavy Guards were stranded on Galax by then Archon-Princess Katherine Steiner-Davion at the beginning of the FedCom Civil War. It wasn't until the end of the war, did the Jon's forces were able obtain transportation resources to get off world.
Jon Davion and his RCT used a dozen Conquistador Class DropShips liberated from Galax's shipyards to invade New Avalon in June 3066. Teamed with Duke Tancred Sandoval and his 2nd Robinson Rangers, they landed in the Rostock continent where they disabled the planet's air and space traffic control system. They also helped local Allied rebels on the ground to take over loyalist control areas. Jon led the Guards into battle with loyalist's armor brigade on the continent of Brunswick. The battle would become a short and tough battle for control of the area against conventional forces of the Loyalists.
In April of 3067, Jon and his RCT participated in the invasion of New Avalon City. The concentrated firepower of the Loyalist RCTs would cause the Heavy Guards to disintegrate in the struggle for the city.
Jihad and the Liberation of New Avalon
His Forces nearly destroyed by the Civil War, Jon set about the task of rebuilding the RCT with salvage taken from the battle for New Avalon City. The unit was assigned to garrison the world of Salem, where it concentrating in building itself.
Once word of the invasion of New Avalon by the Word of Blake reached Jon, he would move his rebuilt command to New Avalon by January 3068. Jon's force would fortunately arrived unmolested after their landfall and managed to fight through the Blakist lines to reach New Avalon City to take up the defense there. Jon would led the Heavy Guards with remains of other allied forces to hit the 44th Shadow Division push the Jihadist force from Mount Davion. His force would slowly succeed, but not without heavy loss. His cousin Jackson would be killed, the New Avalon City would be left fire bombed by the departing Shadow Division in 3074.
Jon would end up in command of the FedSun forces on New Avalon after his cousins' death continuing fight with remaining Blakist forces on the ground.
As a Marshal of the Armies of the AFFS
After New Avalon had finally been secured, Princess-Regent Yvonne Steiner-Davion would elevate Jon to replace his late cousin as Marshal of the Armies by 3075. He would attempt to re-organize AFFS to handle the Word of Blake, rebel commanders in Outback region of the FedSuns, and aggressive actions of the Taurian Concordat.
Commander of the FedSun's Coalition Force
He would soon take over command of Federated Sun's Allied Coalition Task Force, Group II from Marshal Katheryn Sandoval-Ito after her death. Jon would personally take direct command FedSuns Group II to liberate Epsilon Eridani in February of 3078. His Coalition Group would be credited for easily taking command of the Sandoval-Ito's task force. 
In July, he and the rest of the Coalition forces assembled to invade Terra as part of Operation SCORCH. Jon was assigned to Task Force SICKLE to take city of Rio de Janeiro, where it was believed an SDS Command Center was located. His Task Force was assigned the 5th Crucis Lancers, the Iron Guard and the 20th Marik Militia to take their objective. 
Jon's command made its landings in mid-August, where they would seamlessly seize city, taking its manufacturing plant and the local TerraSec Supply Depot. However, forces garrisoned at the SDS Command Fortress on Governador Island stopped his operation in its tracks. Jon would lay seige to the complex with a area bombarded with artillery fire and aerospace strikes for the next three weeks. During this bombardment, Jon employed a local mining company's large tunnel boring machines to cut through the ground and breach the Complex's underground spaces. A Battle Armor force consisting of elite warriors used the tunnels to penetrate the underground facilities' spaces and managed to destroy the complex's massive fuel farm. The shutdown of the Rio's SDS Command Center freed Coalition forces from the threat of SDS attack. 
Aftermath of the Coalition Invasion of Terra
The character's original full name was listed as Jonathan Davion in Field Manual: Updates & Jihad Turning Points: New Avalon. His full name is not used in later publications.
Using AToW rules found in Masters and Minions, any force under the direct command of Jon Davion gains +2 to their initiative. They would additionally also allowed to place units under Jon's command on board after the opposing force has been placed on the field. This is only allowed if Jon's force is not using hidden rules or Off-Map Movement ability.
- Masters and Minions: The StarCorps Dossiers, p. 36 - Jon Davion's profile.
- Masters and Minions: The StarCorps Dossiers, p. 36, 253 - Pre-FedCom Civil War Career and life.
- FedCom Civil War sourcebook pp. 168-169, 181 Wave 7 - Jon's Davion Heavy Guards arriving on New Avalon and their actions. Chart shows the Unit locations during the war.
- Field Manual: Updates, p. 129 - Davion Heavy Guards status after FedCom Civil War.
- Masters & Minions: The StarCorps Dossiers, p. 36 Jon Davion's Profile - His actions during the Jihad.
- Jihad Turning Points: New Avalon, pp. 6, 10 Guard Profile, Davion Falling - Jon's shown as in command of the Davion Heavy Guards and their notable action.
- Jihad Secrets: The Blake Document, p. 34-35 New Avalon: Torture, Lament and Freedom - Marshal "John" Davion message sent to Yvonne Steiner-Davion.
- Jihad Hot Spots: Terra, p. 71 Epsilon Eridani Liberation - Jon's action as coalition commander of FedSun's group.
- Jihad: Final Reckoning, p. 58, "The Jihad in Review"
- Jihad Hot Spots: Terra, pp. 91-93, 96 Gathering Might, Operation SCYTHE - Vid Conference with Devlin Stone and rest of Inner Sphere leaders and Jon's mission assignment for the Terran assault.
- Jihad Hot Spots: Terra, pp. 105, 107-108 Rio Goes Dark, Rio Captured;Dallas Burns - Jon Davion and his Task Force exploits taking Rio and the SDS Command Center.
- Field Manual: Updates, p. 137 - AFFS Deployment Table as of 3067 - Davion Heavy Guards commanding officer is Jonathan Davion.
- Masters and Minions: The StarCorps Dossiers, p. 252 Jon Davion - Special abilities used in normal BattleTech game play in scenarios.