National Army Day in Armenia is a public holiday on January 28th.
Also known as Homeland Defender’s Day, this non-working day commemorates the formation of the armed forces of the newly independent Republic of Armenia in 1992. In September 1991, a referendum for independence in Armenia ended nearly 70 years of Soviet rule. By December 1991, the State Committee of Defense was established by the order of the President of the Republic of Armenia and Vazgen Sargsyan became the Minister of Defense.
The Armenian National Army was established on January 28th 1992, by decree of President of Armenia Levon Ter-Petrosyan. Army Day was first observed in 2001, after the President of Armenia, Robert Kocharyan, signed Army Day into law as an official holiday.
https://www.officeholidays.com/holidays/armenia/armenia-national-army-day