The United States of America officially join the League of Nations.
A dispute arises between Yugoslavia and Italy regarding ownership of the port of Fiume.
A dispute arises between Poland and Czechoslovakia regarding ownership of the town of Teschen.
A dispute arise between Poland and Lithuania regarding ownership of the town of Vilna.
Beginning of the Russian Civil War.
Deployment of troops under a league mandate to stabilise the situation in the Irish Free State. The League of Nations purposefully avoid sending troops from the British Empire to prevent perceived conflicts of interest.
The disputed area of Vilna and its surrounding area becomes a Polish-Lithuanian condominium. Its independence is ensured by a joint Franco-British army detachment.
following the elections in the Irish Free State, the league's troops join with the national army to disarm the pro-republican IRA.
After non-payment by Germany of reparation, France and Belgium threaten invasion of the Ruhr region. A league of Nation committee manage to convince the two later countries to accept a plan whereby Germany will give smaller payments over a longer period of time.
A mixed nationality survey team is sent to the disputed area between Albania and Greece to settle the border. Corfu is granted to Greece.
Japan invades the whole of Manchuria in retaliation for alleged sabotage by Chinese nationalists of the Japanese-controlled railway line. After Chinese protests, the League threatens economical sanctions against Japan. Not wanting to lose its major trading partner at the time (the USA), Japanese troops withdraw.
The Chaco boreal region of South America becomes a demilitarized international zone, with preferential access to the Paraguay river given to Paraguay and Bolivia. The need for a long-term armed League presence in the region would eventually lead to the creation of the League's Peacegivers Corps.
Beginning of the conference on disarmament. It conclude five years later with an agreement to phase out certain weapons deemed to be of a strictly offensive nature (such as mustard gas and flamethrower).
Peacegivers are sent to patrol the sea around the Iberian peninsula to prevent foreign intervention.