Eléonore was the first and only child of Camille and Hugo de Bersaillin, as such she had a privileged upbringing on the Planet Metz, frequenting the family hunting lodge and her parent’s vast estate set aside for them by the Kingdom.
Having always been an intelligent child, she was pushed toward a military career as to follow in her fathers footsteps who himself had a relatively distinguished tour of duty. While she never excelled much with regards to tactical prowess and combat, the area that she managed to prove her worth in was logistical operations.
Having had success during the Marne uprising and the subsequent conflicts with the Council, she managed to work her way through the ranks and eventually was recognised for her ability by her superior officer, being promoted to the rank of Capitaine and being handed command of a Triumph-class vessel, mainly using it to oversee supply lines and ensure that Brigands and Maquis vessels were unable to disrupt her carefully planned operations.
With the GRN Invasion of the Tau sector, she had further success in ensuring that the Council were unable to intercept or disrupt convoys going to the front to keep the war effort supplied, while her vessel never left Gallic space, her contributions to the war were recognised and she quickly found herself in the spotlight, frequently advising the various war councils that were convened. She was eventually promoted to Commandant for her service.
After the conclusion of the war, she remained with the newly-founded Duchy and the Confederacy and due to the lack of manpower and plethora of issues within Lorraine itself she was drafted in to support the Confederate Defense Force in their efforts to stabilise the situation, this was cut short however and she soon found herself on the front lines of an invasion from the Reformed Empire of Kusari. Her vessel was critically damaged during the initial wave of the attack, it crash landed on Metz and while the majority of the crew managed to escape, they found themselves trapped on Metz behind the KNF blockade of the planet.
She spent the next months ensuring that the planet was able to survive the resource crisis brought on by the invasion and when the invaders were eventually removed from Gallic space, she was promoted for her service to the planet and the newly formed Gallic Union.