[1] During the interwar period, Romania, Czechoslovakia and Yugoslavia created an alliance, the Little Entente.

Furthermore, during the Second World War, Romania and Slovakia, as well as Croatia, created a pact against Hungarian expansion.

During the war, Slovak troops and Croatian air and naval forces operated amicably from Romanian soil.

[2] At the end of this war, Romanian troops fought against German soldiers to liberate Slovakia.

In celebration of the 25th anniversary of the establishment of relations between Romania and Slovakia, stamps of the Military Cemetery of Zvolen with a nominal value of 8 lei (1.65€) were minted.