Northern front of the Battle of Transylvania

Northern front of the Battle of Transylvania
Part of the Battle of Transylvania of the Romanian Campaign of World War I

Romanian soldiers surprising the Austro-Hungarians at the Nagy-Gyimes railway station
Date27 August–16 October 1916
Location
Northeastern Transylvania, Austria-Hungary (today in Romania)
Result Romanian tactical victory
Belligerents
 Romania  Austria-Hungary
 Germany
Székely Land Székely partisans
Commanders and leaders
Kingdom of Romania Constantin Prezan
Kingdom of Romania Ion Antonescu
Austria-Hungary Arthur Arz von Straussenburg
German Empire Curt von Morgen
Units involved
Romanian North Army 1st Army
7th Army (Battle of the Kelemen Mountains only)
Casualties and losses
Negligible overall

Battle of the Kelemen Mountains:
136 killed
55 prisoners
First day of the Romanian offensive:
741 prisoners

Final phase of the Romanian offensive:
1,753 prisoners
4 machine guns

Battle of the Kelemen Mountains:
10 killed
63 wounded
44 prisoners
82 missing

On 27 August 1916, Romania entered World War I on the side of the Allies, three of its armies invading Transylvania. The 1st and 2nd Armies invaded the southern part, while the Romanian North Army invaded the northeastern part. Unlike the 1st and 2nd Armies – which had to contend with a German-led counter-offensive (First Battle of Petrozsény, Battle of Brassó) – the North Army faced primarily Austro-Hungarian forces, and as such its campaign hardly had any major battles. After conquering three Hungarian urban districts (including two county capitals), the undefeated North Army was ordered to withdraw due to events outside its control, after inflicting heavier losses than those it had incurred.