The Kingdom of Hungary was an integral part of the Austro-Hungarian Empire. Hungarian soldiers fought on almost all fronts of World War 1. The Battle of .brFor more details on Austro-Hungarian Uniforms: Austria-Hungary fielded probably the most diverse army of World War .brVisit the Fortress Museum in Przemyśl: Romanias history before World War 1 was heavily influenced by the great powers .brItaly was a major European country that joined World War 1 almost a year after the assassination of Archduke Franz Ferdinand in Sarajevo. Initially, Italy actually .