Belgium entered the Second World War with a large mobilized army and a military uniform system that still showed strong influences from the First World War and neighboring European armies. WW2 Belgian military uniforms are particularly interesting because Belgian soldiers in 1940 wore practical khaki clothing, distinctive Adrian-style helmets, leather equipment, and regimental insignia that helped identify their units. Although Belgium maintained neutrality before Germany invaded in May 1940, its army was rapidly mobilized and fought during the eighteen-day campaign. Today, Belgian WWII uniforms remain popular among military historians, collectors, reenactors, and enthusiasts interested in authentic European military history.