Recent history should remind us that it was events in the Balkans which sparked off World War I （1914-1918）， with the assassination of the Austrian heir Prince Franz Ferdinand in Sarajevo， and the consequent invasion of Serbia by Austro-Hungarian armies on 2 August 1914。 Nevertheless， the subsequent four-year war in that theatre is always overshadowed by the simultaneous campaigns on the Western Front。 For the first time this book offers a concise account of these complex campaigns， the organisation， orders of battle， and the uniforms and insignia of the armies involved: Austro-Hungarian， German， Ottoman， Serbian， Montenegrin， Albanian， British， French， Italian， Russian， Bulgarian， Greek and Rumanian。