|Home Defense of Gymnasium State|
|Domobrana Státu Gymnázium|
Flag of Gymnasium State, used also as military flag
|Founded||1 September 2017|
|Headquarters||Sušice, Gymnasium State|
|Minister of Defense||Radek Vastl|
|Percent of GDP||0%|
Army of Gymnasium State (Czech:Armáda Státu Gymnázium), or by its official name Home Defense of Gymnasium State (Czech:Domobrana Státu Gymnázium), is the armed force of Gymnasium State. Unlike armed forces of other countries, the Home Defense lack naval and air branches.
The concept of military of Gymnasium State was founded alongside the Socialist State of Gymnasium on 1 September 2017, however it was first specified in January 2018. For time of its existence, the military was mobilized only once between 1–17 February 2018, during a conflict with simulationist Republic of Bohemia. The Home Defense however still lacks proper structure.