The following events took place in 20 BBY.
This year was known as Year 15 after the Great ReSynchronization.
- Beginning of the Vandal Wars.
- End of the first part of the Vandal Wars.
- The Union Senate passes the Union National Conscription Act, forcing all male citizens of the Union of Earth States between the ages of 18 and 50 to join the Union military and fight in the Earth Civil War, however one could buy their way out for the sum of U$10,000, an entire year's wage for the average Union citizen. Most Union citizens hold sympathies for the Confederacy, and have no desire to risk their lives fighting against the Confederates, anger rapidly spreads.
- Anger over the Conscription Act boils over in Union City in the Republic of Wekland when the "Conscription Lottery" begins, Confederate sympathisers, those who resent the rich for dodging the conscription and those fearful of almost certain death on the battlefield start a large riot, the riot lasts 5 days.
- The Union of Earth States adopts a new Confederate-inspired 110-star flag, believing that the old flag is no longer fit for purpose, the old flag having been insulted by the Confederates as an "ugly flag" since the outbreak of the war.
- Oliver Irton, a Confederate sympathizer from North Valand and brother of President Henry Irton of North Valand, forms the Provisional Government of the Independent State of North Valand, merging all pro-Confederate North Valandan rebel units under a single organization, the Provisional Government will become the new Senate of North Valand following the Confederate victory in the North Valand Campaign.
- Nathaniel Kenobi is knighted.
- Leykor-Varrk Compromise takes effect.
- Utaalk's term as mayor of Raxus Prime ends.
- Alpha Red Asteroid Base is constructed.
- Leviathan Armament Project initiates.'
- Confederate forces temporarily occupies North Valand in the North Valand Campaign, North Valandan Confederate sympathisers and pro-Confederates, which were common the southern part of North Valand bordering the Republic of Valand, assist in the retaking of North Valand, two North Valandan Confederate units of distinction were the 191st (North Valand) Infantry Regiment and the North Valand Irregulars.
- North Valand votes to join the Confederate States of Earth as an independent state, the majority of Unionist North Valandans fled to Union-held territory following the Confederate occupation, leaving a Confederate-sympathizing majority of the North Valandan population.
- Following the taking of North Valand the final campaign of the Northern Front takes place, the Northtown Offensive, with the goal of capturing the Union's major city in the North, Northtown, Northtown is captured in the days leading up to the end of the war, leading to the surrender of all northern Union units, the Northern Front comes to an end.
- The Zann Consortium steals the prototype Zelac-class Star Destroyer.
- Veight Station is destroyed.
- The Republic of Wekland joins the Confederacy following the Wekland Revolution, undertaken with Confederate support, Wekland becomes the 95th, and final, state to join the Confederacy.
- The Confederate States of Earth wins the Earth Civil War through the capture of President Williams leader of the Union, at the Battle of Fort Precipice, and the Siege of Williamstown, the Union capital, as a result of the Union agrees to sign a peace treaty in return for their president, the result is the Treaty of Williamstown, in which the U.E.S is forced to grant legitimacy to the Confederacy, and is treaty bound to respect the C.S.E's independence.
- Mere hours prior to the signing of the Treaty of Williamstown ex-New Earth Republic Confederate volunteers led by ex-NER officer Commander Henry Vorivich enter the Union Senate building and hold it hostage, demanding that the Union be reformed into the Second New Earth Republic (SNER), they raise the SNER banner over the building and declare the building the assembly of the "Senate of the Second New Earth Republic", a joint Confederate-Union force led by Field Marshal Alexander Norman, commander-in-chief of the Confederate States of Earth Army, battles the SNER terrorists, and defeats them. The SNER banner is captured by the Confederates and is displayed in the Museum of Confederate History in Zarkan City.
- The day on which the signing of the Treaty of Williamstown took place becomes the Confederate Independence Day, an annual holiday in which the C.S.E gives thanks for its independence, self-determination, liberty and those died for its freedom.
- The Confederate States of Earth Army forms the Army of Occupation, an army of reservists and volunteers, the purpose of the army is to maintain forces within the Union of Earth States, to ensure the Union doesn't attempt to restart the Earth Civil War.
- Two months following the end of the war Confederate States of Earth has her first presidential election, Jane Zarkan having served as president for over a year without being elected due to the crisis of fighting a war shortly after the Confederacy having been formed, Jane Zarkan wins the presidency in a landslide, winning a staggering 97% of the vote.
- The Dalek Empire takes over the galaxy
- Battle of Leziquk
- Operation Forager
- Battle of Tython
- Second Battle of Ithor
- Bombardment of Kamino
- First Battle of Kamino
- Raid on Kashyyyk
- Battle of Coruscant
- Battle of Naboo
- Battle of Jem7 takerd place New Republic era (Lord Sidious)
- Earth Civil War (21 BBY - 20 BBY)
- Second Battle of Ord Zathuun
- Battle of Erayyxa
- Second Battle of Bakura
- Battle of Sekigahara
- Pash Cracken on Contruum
- Lumpwaroo on Kashyyyk
- R3-L6 on Woka
- A'den Kad on Mandalore
- Jax Mooncylle on Tatooine
- Igar Drelosyn on Kuat
- Irol Elsek on Tatooine
- Sena Tavari on Byss
- Elscon Hinchlore on Daroon
- Floo Iskis on Ord Mantell
- Valos Clensaa on Bandonia
- Munto Kyliff on Ajampor
- Iothe Druna on Anobis
- Nim-Adko on Leziquk
- Pyrn Werd on Leziquk
- Vearn Laannl on Leziquk
- Tesrn Edap on Leziquk
- Reen Vaiin
- Editru Pflufurger on Bruvia
- Karis Dron on Krellok
- Saché Aeyinson on Naboo
- Dormé Costil on Naboo
- OOM-5 on Ithor
- Most of the Wookiee Guild members on Kashyyyk.
- Babbsi Reyhan Bent on Norval II
- Ct-3222 on Bakura
- CT-2327 on Bakura
- Amyette Balkar on Ord Zathuun
- Deloks Catax on Kashyyyk
- Coté on Naboo
- During the Campaign of Naboo
23 BBY 22 BBY 21 BBY - 20 BBY - 19 BBY 18 BBY 17 BBY