The Hlinka Guard (HG) was the militia maintained by the Slovak People's Party from 1938 to 1945. It was the internal security arm of the party while it ruled the independent Slovakia. The militia was named after Andrej Hlinka. The Hlinka guard represented some of the most pro-Nazi elements of Slovakia. Many of the guard were trained by the SS, and played crucial roles in the Holocaust.
Very early on in the 1938 Germaninvasion of Czechoslovakia, the Hlinka Guard sided with Germany, helping to undermine Czech resistance. While Slovaks were far from unanimously supporting the Hlinka Guard, the fact of its members fighting on the side of the Nazis caused Czech soldiers to feel doubt about the loyalty of their Slovak comrades in arms, weakening the Czechoslovak Army's ability to hold on. After Germany created the puppet Slovakia, the Hlinka guard made up the ruling class.