Note: All dates are in the Gregorian calendar which may result in discrepancy as some sources use the Julian calendar while others Gregorian.
1618 Thirty Years' War begins
1619 Ferdinand II. elected emperor Frederick of the Palatinate elected king of Bohemia
1619–1620 Gustavus travels in Germany
1620 November 8 November: Battle of White Mountain Maximilian of Bavaria joins Ferdinand
1621 Palatinate reduced
1622 May–June Tilly's manoeuvres in Baden
June Danzig agrees to neutrality
1623 August Mansfeld and Brunswick defeated on Weser
1625 June Gustavus lands at the Dwina
July–August Livonia reduced
Summer Two battles at Riga
Fall Courland reduced
Year-wide Christian of Denmark undertakes war Treaty with Stralsund
1626 January 6 January: Battle of Walhof
April Wallenstein defeats Mansfeld
June Pillau taken by Gustavus
July Königsberg and Prussian towns taken Siege of Danzig begins
August Relief of Mewe by Gustavus 27 August: Battle of Lutter
1627 Spring Swedish reverses
May Gustavus arrives at Danzig
May–June Gustavus twice wounded
Fall Naval battle off Danzig Storm of Wörmditt
Winter Baltic treaty with Denmark
Year-wide Tilly invades Holstein Wallenstein defeats Christian
1628 Spring Defeat of Koniezpolski
July 24 July: Wallenstein defeated at Stralsund
1629 May 19 May: Edict of Restitution issued 22 May: Peace of Lübeck
June 27 June: Operation at Stuhm
July 16 July: Victory at the Nogat
August Truce of Stuhmsdorf
Winter Winter, 1629–1630: Preparations for war
1630 March–April Alexander Leslie, 1st Earl of Leven takes Rügen in the name of king of Sweden
June 9 June: Gustavus sets sail for Germany
July 4 July: Swedish forces land at Usedom Swedish forces take Usedom and Wollin 20 July: Swedes take Stettin
July–August Capture of coast towns
August Siege of Colberg begins 14 August: Swedish force take the Wolgast garrison 28 August: Savelli besieges Tollense
August–September Advance on Mecklenburg
September 27 September: Ribnitz taken by Gustavus September 1630 to May 1631: Siege of Magdeburg
November Congress of Ratisbon ends Tilly succeeds Wallenstein Gustavus defeats Savelli at Demmin 11 November: Battle of Schievelbein Battle of Ratzburg
December 25 December: Swedish forces captured Greifenhagen 26 December: Swedish forces captured Garz
1631 January 18 January: Tilly reaches Frankfort 23 January: Treaty of Bärwalde between Sweden and France
January–February Bärwalde Camp Demmin movement
February 15 February: Capture of Demmin
February–March Leipzig Convention
March 2 March: Swedish forces captured Colberg 23 March: Neu-Brandenburg massacre 31 March: Cüstrin surrenders to Swedish forces
April 3 April: Storm of Frankfort 9 April: Pappenheim captures outer forts of city (Magdeburg) 13 April: Swedish forces captured Frankfurt an der Oder 16 April: Landsberg falls 30 April: Falkenberg retires within walls
May 6 May: Swedish forces captured Spandau 20 May: Sack of Magdeburg
June Tilly marches on Hesse-Cassel 25 June: Capture of Greifswald
July 5 July: Dukes of Mecklenburg restored 10 July: Capture of Tangermünde
July–August Camp at Werben
August 1 August: Burgstall combat 7 August: Tilly defeated at Werben 8 August: Tilly retires 24 August: Hersfeld was conquered by Hesse-Cassel Gustavus fortifies Havel-Spree line End August: Tilly moves on Hesse-Cassel
September Early September: Tilly moves on Saxony 9 September: Fritzlar was conquered by Hesse-Cassel 10 September: Gustavus' treaty with Saxony 15 September: Saxon and Swedish armies join at Düben 16 September: Tilly captures Leipsic 17 September: Battle of Breitenfeld (1631) 27 September: Gustavus heads for Thuringia
October 2 October: Gustavus arrives at Erfurt 8 October: March through Thüringerwald 15 October: Würzburg captured 17 October: Marienburg captured 25 October: Imperial garrison withdraws from Rostock due to Swedish pressure
November 2 November: Gustavus defeats duke of Lorraine Early November: Saxons move to Prague 10 November: Gustavus starts down the Main 28 November: Swedes captured Frankfurt am Main
December Worms captured by Swedish forces Arnsburg Abbey overran and plundered by Swedish troops.Zur Geschichte des Klosters 4 December: Tilly attacks Nürnberg 13 December: Spanish garrison in Gernsheim surrenders to Swedish forces 19 December: Spanish forces in Oppenheim surrender to Swedish army 23 December: Mainz surrenders to Swedish forces Swedish forces deployed in Zweibrücken.Geschichte des HHG
1632 January 11 January: Swedish forces entered the ruined city of Magdeburg following the Imperial withdrawal.Geschichte der Stadt Magdeburg 18 January: Tilly withdraws from Nürnberg 22 January: The imperial garrison in Wismar surrenders to Swedish forces
February 3 February: Johan Fredrik forces captured Verden 4 February: Swedish forces entered Lüneburg and Goslar 10 February: Swedish General Baudissin captured the Landskron fortress.Philipp Wilhelm Wirtgen, Das Ahrthal. Natur, Geschichte, Sage, S. 152 Wallenstein invades Bohemia Swedish forces captured Gottingen
March 9 March: Catholic forces captured Bamberg 15 March: Gustavus joins Horn 31 March: Gustavus enters Nürnberg
April 5 April: Swedish forces captured Donauwörth 15 April: The crossing of the Lech 16 April: Swedish army occupied Memmingen.Memmingen im Dreißigjährigen Krieg. Freiheit, Glaube und Leben in Gefahr 20 April: Gustavus takes Augsburg and Biberach an der RißKaiserliche und Schweden in Biberach 1632 bis 1634 29 April: Gustavus moves on Ingolstadt End of April to beginning of May: Unsuccessful Siege of Ingolstadt Swedish and Württemberg forces captured Radolfzell on the shore of Constane Lake.Krieg auf dem Bodensee! Als auf Deutschlands größtem See Kriegsschiffe kämpften May 8 May: Swedish army entered Landshut demanding a large tribute and left the town afterwards.Beyond the Battlefield Reconsidering Warfare in Early Modern Europe 10 May: Gustavus enters Munich 18 May: Wallenstein takes Prague
May–June Gustavus reduces Swabia and Bavaria
June 12 June: Gustavus starts north 17 June to 1 July: Gustavus at Hersebruck 18 June: Gustavus at Fürth 24 June: Wallenstein and Maximilian join
July 1 July: Swedish troops captured Koblenz.Philippsburg Castle 3 July: Gustavus reaches Nürnberg 13 July: Wallenstein reaches Nürnberg 15 July: Wallenstein fails in a surprise
July–August Starving match at Nürnberg
August 6 August: Wallenstein captures Lichtenau 9 August: Gustavus captures convoy 23 August: Oxenstiern arrives with reinforcements 31 August: Gustavus offers Wallenstein battle
September 1 September: Swedish forces captured Strasbourg 3 September: Gustavus attacks the Alte Veste 4 September: Saxon-Swedish victory at the First Battle of Steinau 6 September: Saxon-Swedish forces captured Wrocław 10 September: Saxon-Swedish forces captured Schweidnitz.Świdnica podczas wojny trzydziestoletniej 19 September: Gustavus leaves Nürnberg 21 September: Wallenstein leaves Nürnberg
October Early October: Gustavus on the Danube 15 October: Wallenstein starts for Saxony 18 October: Gustavus starts for Saxony
November 2 November: Wallenstein takes Leipsic Early November: Gustavus at Erfurt 9 November: Gustavus crosses Saale 16 November: the Battle of Lützen and Gustavus' death
December 30 December: Swedish forces under the command of Horn captured Freiburg im Breisgau
1633 Bernard operates on the Danube Horn operates in Swabia Wallenstein operates on the Oder January Spanish troops recaptured the OlbrückOlbrück Castle and Landskron castles. February 6 February: William V, Landgrave of Hesse-Kassel entered Dortmund unopposed.Geschichte der Stadt Dortmund 9 February: Hesse-Cassel captured the town of Dorsten without resistance from the Electorate of Cologne 16 February: Swedish troops captured Mindelheim.“Das” Bayerland 19 February: General Altringer defeats the Swedes at the monastery of Zwiefalten. 28 February: Bernhard of Saxe-Weimar captured the town of Höchstädt an der Donau, as well as Bamberg.Swedish Period
March 16 March: Swedish troops captured Montabaur.The German Political Broadsheet, 1600-1700: 1633-1648
April Peter Melander, Graf von Holzappel's Hessian forces take Paderborn. May 1 May: Swedish General Torstenson captures Landsberg am Lech. 26 May: Swedish troops captured the Heidelberg Castle.History of the Castle Heidelberg 28 May: The Bavarian garrison of Eichstätt capitulates to Duke Bernhard of Saxe-Weimar.
July 6 July: Battle of Oldendorf: Swedish troops captured Hamelin
September 12 September: Swedish forces captured Osnabrück 26 September: Saxon-Swedish forces withdrew from Schweidnitz following a Catholic siege. 27 September: Imperial forces recaptured the Biberach an der Riß.
October 5 October: Expulsion of the Swedes from Paderborn. 11 October: Swedish-Saxon defeat at the Second Battle of Steinau.Vid staden Steinau i södra Schlesien slog Wallenstein den 11 okt 1633 en svensk armé och tillfångatog dess befälhavare
November 14 November: Protestant forces led by Bernard of Saxe-Weimar captured Regensburg.The Ashgate Research Companion to the Thirty Years' War 23 November: Swedish forces captured Straubing after a four-day siege.1618 – 1648 Der Dreißigjährige Krieg und seine Auswirkungen in unserer Gegend
1634 February 25 February: Wallenstein assassinated March Swedish forces again captured the Biberach an der Riß.
July 22 July: Swedish forces plundered Landshut again. Imperial forces captured Regensburg.View of the siege of Regensburg, 1634
August 8 August: Catholic forces capture Regensburg and the Swedish garrison surrenders
September 6 September: Battle of Nördlingen (1634)
October 1 October: Large-scale Protestant attack on Constance fails with more than 1,000 dead.
1635 January: The Swedes lose Nuremberg March: The Swedes lose Augsburg
1636 January: Sweden’s former ally Brandenburg declares war on Sweden March: The Swedish garrison in Magdeburg surrenders 4 October: The Swedish commander Johan Baner defeats the combined Imperial-Saxon army at Wittstock
1641–1642 Torstenson commands Swedish army
1642 June 3 June: Swedish forces captured Schweidnitz .
October 23 October: Battle of Edgehill
Winter Cromwell begins "Ironsides" discipline
1643 May Battle of Grantham 19 May: Battle of Rocroy
July Battle of Gainsborough
October Battle of Winceby
December Turenne takes command of French army
1644 May Turenne's raid into Swabia 17 May: Imperial forces recaptured Schweidnitz . June Turenne's failure at Freiburg
July 2 July: Battle of Marston Moor
August 3–9 August: Battle of Freiburg
September 12 September: Capture of Philippsburg
September–December Capture of Mainz and other places
1645 February "New Model" army voted
April Turenne crosses Rhine
May 5 May: Battle of Mergentheim
June 14 June: Battle of Naseby
July 5 July: Condé joins French army
August 5 August: Battle of Allerheim
September 10–11 September: Cromwell at Bristol
1646 June Nidda operation
September–October Condé at Dunkirk
October Memmingen operation 14 October: Cromwell at Basing House
1647 March Bavaria deserts Ferdinand
Year-wide Condé in Catalonia
1648 May Zumarshausen operation Condé takes Ypres
July Turenne on the Inn
August Battle of Preston Pans 24 August: Battle of Lens
October 24 October: Peace of Westphalia
References
Gustavus Adolphus, Sweden and the Thirty Years War, 1630–1632