2 April 1919.

Stalemate in the battle for Bolshie-Ozerki as the Reds and the Allied armies attempt to outflank each other in heavy snow.

Red Army troops enter the Crimea and advance on the port of Odessa where many thousands are desperate to escape by sea.

3 April 1919.

Karl, former Emperor of Austria-Hungary, formally deposed in Austria. No such law is passed however in Hungary which inspires Karl to make two attempts to be restored as King of Hungary in 1921.  

4 April 1919.

An Allied delegation led by the South African Jan Smuts arrives in Budapest to persuade the newly installed Communist government to follow the guidelines set down by the Paris Peace Conference in return for a lifting of the economic blockade imposed on Hungary. Smuts also has instructions to report back on the threat posed by Hungary to European democracy.

5 April 1919.

The Reds abandon Bolshie-Ozerki which is occupied by the Allies. This was the last major battle between the Bolsheviks and the Allied Intervention Force in northern Russia as Allied governments order their troops to withdraw over the spring and summer.

6 April 1919.

Allied troops begin the evacuation of Odessa with the French and the Greeks the first to leave.

The socialist People's State of Bavaria overthrown by hardline Soviet-style Communists who proclaim the Bavarian Soviet Republic in Munich with Ernst Toller as President. The ousted government of Johannes Hoffmann sets up its seat of government in Bemberg.

11 April 1919.

The British battleship HMS Marlborough sails frrom Yalta in the Crimea carrying 12 members of the Russian Imperial Family plus several other Imperial figures and their respective entourages. Among those on board are the late Tsar's mother, sister and three of his sister's children. Also included is Prince Felix Yussupov the murderer of Rasputin. The warship is heading for Malta.    

12 April 1919.

Just six days after taking office the Communist government of Ernst Toller in Bavaria (see 6 April) is overthrown by another Communist faction led by Eugen Levine who is under instruction from Moscow.

Europe now has two Communist governments, Hungary and Bavaria, operating under direct orders from Lenin in Moscow.

14 April 1919.

The United Trades and Labour Council in Limerick proclaims the Limerick Soviet and a general strike.

16 April 1919.

German troops under Gen. von der Goltz that the Allies have allowed to remain in Latvia to counter the Bolshevik threat overthrow the Provisional Government of Karlis Ulmanis and appoint Andrievs Niedra Prime Minister. This meant that there were now three opposing governments in Latvia; the Provisional Government recognized by the Allies, the puppet German administration and the Russian backed Soviet Government.

Roumanian troops invade the newly formed Hungarian Soviet Republic.

Troops of the newly proclaimed Bavarian Soviet Republic defeat a force of soldiers loyal to the ousted People's State of Bavaria at Dachau.   

18 April 1919.

Hungarian-Roumanian War - Roumanian troops break through the Hungarian border defences.

Russo-Polish War - Polish troops enter Russia capturing Lida, Novogrudok and Baranivichi the south. Their main objective is the only major city in the area Vilna.

19 April 1919.

The Provisional National Government of Southwestern Caucasus in Kars, north east Turkey is dissolved by the British High Commission in Armenia. This short-lived semi-independent government was viewed as a puppet administration of the Turks. A dozen leading figures in the government, including the President, were exiled to Malta.

Hungarian-Roumanian War - The Roumanians take Nagykaroly.

Russo-Polish War - The Poles reach Vilna and lay it under siege.

20 April 1919.

Hungarian-Roumanian War - The Roumanians take Nagyvarad and Nagyszalonta.

21 April 1919.

Russo-Polish War - The Poles enter the city of Vilna.

22 April 1919.

The Italians temporarily walk out of the Paris Peace Conference over the Allies inclination to award the Adriatic port of Fiume to Yugoslavia.

23 April 1919.

Hungarian-Roumanian War - The Roumanians reach Debrecen.

25 April 1919.

Soldiers from the White 3rd North Russian Rifle Regt mutiny and turn on their former British allies at Shussuga. 

26 April 1919.

Hungarian-Roumanian War - The Roumanians reach Bekescsaba, the Hungarians retreat to the river Tisza. 

28 April 1919.

In the Russian Civil War the Reds under Gaya Gai defeat the Whites at Buguruslan in western Siberia.

29 April 1919.

The German Foreign Minister, Count Brockdorff-Rantzau arrives at the Paris Peace Conference.

Yugoslav troops cross the border into Austrian Carinthia to lay claim to the territory prior to the signing of any peace treaty.

Hungarian-Roumanian War - The Roumanians reach the east bank of the river Tisza.  

30 April 1919.

The Berlin government orders an end to the semi-autonomous Communist government in Bavaria. As troops enter Munich the commander of the Communist forces in the city orders the execution of ten prominent hostages including Prince Gustav of Thurn und Taxis and Countess Hella von Westarp.