Timeline of World War I WIP
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Updated 10 May 2021
A timeline of the events of World War I.
Color of event signifies where the event took place.
When editing the timeline please make sure that the correct tags and colors are used.
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Assassination of Archduke FerdinandAustria-Hungary declares war on SerbiaAustria-Hungary asks Germany for support in war again SerbiaAustria-Hungary ultimatumSerbia mobilizesAustria-Hungary mobilizesGermany sends Russian an ultimatumRussia mobilizesGermany declares war on Russia and mobilizesFrance mobilizesItaly, Denmark, Sweden, and Norway declare neutralityGermany and the Ottoman Empire sign a secret alliance treatyGermany invades LuxembourgSkirmish at JonchereyRearguard Affair of ÉtreuxRearguard Affair of Le Grand FaytBattle of Le CateauBattle of MonsAffair of CerizyAffair of NéryRearguard Action of Crepy-en-ValoisRearguard Action of Villers-CotteretsGermany declares war on FranceBelgium denies German forces to pass through to FranceSwitzerland declares neutrality and mobilizes for defenseGermany invades BelgiumMontenegro declares war on Austria-HungaryAustria-Hungary declares war on RussiaThe United States declares neutralitySerbia declares war on GermanyThe Ottoman Empire closes the DardanellesSpain declares neutralityMontenegro declares war on GermanyFrance declares war on Austria-HungaryThe United Kingdom declares war on Austria-HungaryGerman troops occupy TavetaBattle of StallupönenBattle of GumbinnenGerman troops occupy BrusselsJapan declares war on GermanyThe United Kingdom asks Japan for assistanceJapan sends Germany an ultimatumFrance implements Plan XVIIAction of ElougesJapan declares war on Austria-HungaryBattle of TepeAustria-Hungary declares war on BelgiumBattle of NsanakongSeptemberprogramm is introduced as Germany's war goalsBattle of Bita PakaBattle of SandfonteinBattle of KakamasBattle of NaulilaBattle of ZanzibarBombardment of PapeeteBombardment of MadrasBattle of PenangBlack Sea RaidRussia declares war on the Ottoman EmpireBattle of CoronelSerbia declares war on the Ottoman EmpireBattle of Heligoland BightMontenegro declares war on the Ottoman EmpireBattle of KilimanjaroFrance and the United Kingdom declare war on the Ottoman EmpireBattle of El HerriBattle of the Falkland IslandsRaid on Scarborough, Hartlepool and WhitbyJapan makes its Twenty-One Demands on ChinaBattle of Dogger BankBattle of BolimówBattle of Mas a TierraBattle of DilmanTreaty of LondonBattle of TrekkopjesFirst Battle of KrithiaBattle of GurinBattle of Eski HissarlikItaly leaves the Triple Alliance with Germany and Austria-HungaryBritish Lusitania is sunk by a German U--BoatBattle of AubersLanding at Anzac CoveItaly declares war on Austria-HungaryThird Battle of KrithiaBattle of NgaundereBattle of OtaviGerman forces in South-West Africa surrenderBattle of NekBritish SS Arabic is sunk by a German U-BoatBattle of Scimitar HillItaly declares war on the Ottoman EmpireBattle of Es SinnBulgaria declares war on SerbiaUnited Kingdom declares war on BulgariaMontenegro declares war on BulgariaFrance declares war on BulgariaItaly and Russia declare war on BulgariaBattle of WadiBattle of HannaThe United Kingdom enacts the Military Service Act 1916Battle of Salaita HillBattle of AgagiaBattle of DujailaGermany declares war on PortugalAustria-Hungary declares war on PortugalBattle of KaheSykes-Picot Agreement RatifiedBattle of the Boar's HeadBlack Tom explosionBattle of DoberdòBattle of MlaliRomania enters the war on the Allies sideItaly declares war on GermanyThe Ottoman Empire declares war on RomaniaBulgaria declares war on RomaniaBattle of GinchyBattle of MatamondoBattle of PrunaruBattle of MagdhabaBattle of RafaZimmermann TelegramSecond Battle of KutBattle of NambanjeChina severs relations with GermanyFirst Battle of GazaThe United States declares war on GermanyCuba declares war on GermanyPanama declares war on GermanyBrazil severs relations with GermanyBolivia severs relations with GermanyThe Ottoman Empire severs ties with the United StatesGreece declares war on Central PowersBattle of AqabaSiam declares war on Germany and Austria-HungaryBattle of Kiawe BridgeLiberia declares war on GermanyChina declares war on Germany and Austria-HungaryCosta Rica severs relations with GermanyBattle of BroodseindePeru severs relations with GermanyUruguay severs relations with GermanyBattle of PoelcappelleFirst Battle of PasschendaeleBattle of Wadi MusaBrazil declares war on GermanyBattle of BeershebaBalfour DeclarationCharge at HujBattle of Mughar RidgeBattle of Ayun KaraSecond Battle of Heligoland BightBattle of NgomanoThe United States declares war on Austria-HungaryEcuador severs relations with GermanyRomania signs an armistice with the Central PowersPanama declares war on Austria-HungaryArmistice between Russia and Central powers is signed, takes effect on Dec. 17Fourteen PointsTreaty of Brest-Litovsk between Ukraine and Central PowersTreaty of Brest-Litovsk between Russia and Central PowersRouge BouquetBattle of the AvreBattle of the AncreBattle of Moreuil WoodBattle of MerckemBattle of BéthuneBattle of the ScherpenbergGuatemala declares war on GermanyTreaty of Bucharest (1918)Nicaragua declares war on Germany and Austria-HungaryCosta Rica declares war on GermanyBattle of CantignyAction of ArsufBattle of HamelHaiti declares war on GermanyBattle of Abu TellulBattle of Château-ThierryBattle of TardenoisHonduras declares war on GermanyBattle of ÉpehyBattle of HavrincourtBattle of HaifaCapture of TiberiasBattle of TulkarmBattle of AraraCapture of JeninCapture of Afulah and BeisanBattle of SamakhSecond Battle of AmmanCharge at IrbidBattle of Jisr Benat YakubCharge at KaukabCharge at KisweGermany requests armistice with the United StatesBattle of AleppoArmistice of MudrosRomania renews war against the Central PowersArmistice of 11 November 1918German forces evacuate LuxembourgGerman forces evacuate BelgiumTreaty of Versailles is signedOfficial end of World War ITreaty of Trianon is signedTreaty of Trianon is effectiveTreaty of Versailles is effectiveTreaty of Saint-Germain-en-Laye is signedTreaty of Saint-Germain-en-Laye is effectiveTreaty of Neuilly-sur-Seine is signedClemenceau–Lloyd George AgreementArmistice of BelgradeArmistice of ErzincanArmistice of SalonicaArmistice of Villa GiustiTreaty of BatumTreaty of Bucharest (1916)Treaty of BufteaBulgaria–Germany treatyBulgarian–Ottoman convention (1915)German–Polish Convention on Upper SilesiaTreaty of Lausanne is signedTreaty of Lausanne is effectiveLittle Treaty of VersaillesModus vivendi of AcromaTreaty of MoscowTreaty of PotiSazonov–Paléologue AgreementAgreement of Saint-Jean-de-MaurienneSykes–Picot AgreementTreaty of Peace between Austria-Hungary and FinlandTreaty of Peace between Finland and GermanyU.S.–German Peace Treaty (1921) is signedU.S.–German Peace Treaty (1921) is effectiveU.S.–Austrian Peace Treaty (1921) is signedU.S.–Austrian Peace Treaty (1921) is effectiveU.S.–Hungarian Peace Treaty (1921) is signedU.S.–Hungarian Peace Treaty (1921) is effectivePeriods
Battle of the ArdennesBattle of the FrontiersBattle of MulhouseBattle of HalenBattle of LorraineBattle of CharleroiBattle of Grand CouronnéGreat RetreatFirst Battle of St. QuentinFirst Battle of the MarneFirst Battle of AisneRace to the SeaBattle of LiègeTogoland campaignBattle of CerBattle of TannenbergBattle of GaliciaBattle of KraśnikBattle of KomarówBattle of Gnila LipaBattle of RawaBattle of the Trouée de CharmesSiege of MaubeugeSiege of MoraSiege of TsingtaoFirst Battle of GaruaNew Zealand forces occupies SamoaBattle of the DrinaBattle of the Two MorinsFirst Battle of the Masurian LakesSouth West Africa CampaignMaritz RebellionSiege of TomaBattle of FlireyFirst Battle of PicardySiege of PrzemyślBattle of the Vistula RiverFirst Battle of AlbertSiege of AntwerpBattle of Rufiji DeltaFirst Battle of ArrasBattle of La BasséeBattle of MessinesBattle of ArmentièresBattle of the YserFirst Battle of YpresBergmann OffensiveBattle of TangaFao LandingBattle of BasraBattle of ŁódźBattle of KolubaraBattle of LimanowaBattle of QurnaPersian CampaignBattle of GivenchyFirst Battle of ArtoisFirst Battle of ChampagneBattle of ArdahanBattle of JassinBattle of HartmannswillerkopfSecond Battle of the Masurian LakesGallipoli campaignBattle of Neuve ChapelleFirst Battle of WoevreBattle of ShaibaDefense of VanSecond Battle of YpresBattle of St. JulienBattle of FrezenbergBattle of BellewaardeSenussi CampaignBattle of CtesiphonSerbian Great RetreatBattle for Lake TanganyikaBattle of KosturinoSiege of KutMontenegrin CampaignBattle of MojkovacBattle of Sheikh Sa'adBattle of ErzurumBattle of TrebizondBattle of VerdunKamerun CampaignFifth Battle of the IsonzoBattle of BitlisBattle of Latema NekAnglo-Egyptian Darfur ExpeditionLake Naroch OffensiveKienthal ConferenceGas attacks at HulluchBattle of Kondoa IrangiBattle of AsiagoBattle of JutlandBattle of Mont SorrelBrusilov OffensiveArab RevoltSiege of MedinaBattle of MeccaBattle of TaifBattle of SommeSecond Battle of AlbertBattle of ErzincanBattle of KostiuchnówkaBattle of Bazentin RidgeBattle of Delville WoodBattle of FromellesBattle of PozièresBattle of KowelBattle of RomaniSixth Battle of the IsonzoFirst Battle of DoiranBattle of TransylvaniaBattle of TurtucaiaBattle of GuillemontBattle of BazargicBattle of KisakiGorlice–Tarnów OffensiveSecond Battle of KrithiaSecond Battle of ArtoisBattle of FestubertRussian Great RetreatSecond Battle of GaruaBattle of BukobaFirst Battle of the IsonzoBattle of Gully RavineBattle of ManzikertSecond Battle of the IsonzoBattle of Kara KillisseBattle of Lone PineBattle of Krithia VineyardLanding at Suvla BayBattle of Sari BairBattle of Chunuk BairBattle of Hill 60 (Gallipoli)Sventiany OffensiveThird Battle of ArtoisBattle of LoosActions of the Hohenzollern RedoubtSecond Battle of ChampagneSerbia CampaignMorava OffensiveOvče Pole OffensiveBattle of KrivolakThird Battle of the IsonzoBattle of BanjoFourth Battle of the IsonzoKosovo OffensiveBattle of TaboraBattle of DutumiMonastir OffensiveBattle of Malka NidzheBattle of KaymakchalanSeventh Battle of the IsonzoBattle of Flers–CourceletteFirst Battle of CobadinBattle of MorvalBattle of Thiepval RidgeFlămânda OffensiveFirst Battle of the Crna BendBattle of Le TransloyBattle of the Ancre HeightsEighth Battle of the IsonzoBattle of KibataSecond Battle of CobadinNinth Battle of the IsonzoBattle of the AncreBattle of BucharestBattle of the ArgeșChristmas BattlesBattle of BehobehoOperations on the AncreFall of BaghdadSamarra OffensiveStalemate in Southern PalestineSecond Battle of ArrasBattle of Vimy RidgeFirst Battle of the ScarpeSecond Battle of the ScarpeBattle of ArleuxThird Battle of the ScarpeSecond Battle of the AisneBattle of the HillsSecond Battle of GazaBattle of DoiranSecond Battle of the Crna BendTenth Battle of the IsonzoSecond Battle of MessinesBattle of Mount OrtigaraBattle of ZborivKerensky OffensiveBattle of MărăștiBattle of PasschendaeleBattle of Pilckem RidgeBattle of RumboBattle of MărășeștiThird Battle of OituzBattle of Hill 70Battle of LangemarckEleventh Battle of the IsonzoOperation AlbionBattle of JuglaBattle of the Menin Road RidgeBattle of Polygon WoodFirst Battle of RamadiSecond Battle of RamadiBattle of MahiwaBattle of La MalmaisonBattle of CaporettoSecond Battle of PasschendaeleThird Battle of GazaBattle of Tel el KhuweilfeFirst Battle of Monte GrappaBattle of JerusalemBattle of Nebi SamwilBattle of CambraiBattle of JaffaBritish occupation of the Jordan ValleyBattle of RarańczaOperation FaustschlagCapture of JerichoBattle of Tell 'AsurBattle of BakhmachOperation MichaelSpring OffensiveBattle of St. QuentinActions at the Somme crossingsFirst Battle of BapaumeBattle of RosièresThird Battle of ArrasFirst Transjordan attack on AmmanAction of Khan BaghdadiFirst Battle of AmmanFirst Battle of Villers-BretonneuxOperation GeorgetteBattle of EstairesBattle of MessinesBattle of HazebrouckBattle of BailleulFirst Battle of KemmelSecond Battle of KemmelSecond Battle of Villers-BretonneuxSecond Transjordan attack on Shunet Nimrin and Es SaltBattle of KaniówRevolt of the Czechoslovak LegionBattle of SardarabadBattle of AbaranBattle of KarakilisaThird Battle of the AisneBattle of Skra-di-LegenBattle of Belleau WoodGerman Caucasus expeditionSecond Battle of the Piave RiverSecond Battle of the MarneBattle of SoissonsHundred Days OffensiveBattle of AmiensBattle of San MatteoThird Battle of AlbertSecond Battle of BapaumeBattle of BakuBattle of LiomaBattle of Mont Saint-QuentinBattle of Drocourt-Quéant LineUfa ConferenceBattle of Saint-MihielVardar OffensiveBattle of Dobro PoleThird Battle of DoiranBattle of St Quentin CanalBattle of MegiddoBattle of NablusThird Transjordan attackBattle of SharonBattle of TabsorBattle of NazarethMeuse–Argonne OffensiveCapture of DamascusBattle of the Canal du NordFifth Battle of YpresPursuit to HaritanBattle of Blanc Mont RidgeSecond Battle of CambraiBattle of CourtraiBattle of the SelleBattle of the Lys and the EscautBattle of SharqatBattle of Vittorio VenetoBattle of Monte GrappaWIlhelmshaven MutinyParis Peace ConferenceConstantinople AgreementBattle of MulhouseAtlantic U-Boat CampaignBattle of Morhange-SarrebourgRaid on the Suez CanalBattle of Hill 60 (Western Front)Battle of Hill 60 (Western Front) (copy)Battle of Hareira and Sheria
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