Hungarian invasion of Carpatho-Ukraine

Hungarian invasion of Carpatho-Ukraine
	Part of the prelude to World War II
Date	13–18 March 1939
Location	Carpatho-Ukraine
Result	Hungarian victory
Territorial; changes	Hungarian occupation and annexation
Belligerents
Commanders and leaders
Units involved
Carpathian Group; Irregular troops;	12th Division; Border Security (StOS); Carpathian Sich;
Strength
> 25,000; Other estimates: 18,000; 500 guns; 50 tanks; 15 aircraft;	± 8,000; Other estimates: 2,700 (Czechoslovak); 1,500 (Ukrainian); 6 light tanks LT-35 (Czechoslovak); 4 armored vehicles OA vz.30 (Czechoslovak);
Casualties and losses
72 killed, 164 wounded, 3 missing and 2 prisoners (official Hungarian statistics); ± 200 killed and several hundred wounded (Czechoslovak and Ukrainian estimates);	1,500 killed and wounded

The Hungarian invasion of Carpatho-Ukraine was a 1939 military conflict between the Kingdom of Hungary and Carpatho-Ukraine. During the invasion a series of clashes took place between the Hungarian and Polish troops against the paramilitary formations of the Carpathian Sich of Carpathian Ukraine and some Czech troops who remained in the region after the Czechoslovak army was disbanded. The war ended with the occupation and subsequent annexation of the territory of Transcarpathian Ukraine (Subcarpathian Rus') to the Kingdom of Hungary.

This territory was later invaded by the Soviet Union and integrated into its Ukrainian SSR.