1st Army 1st Army/XXXIX Reserve Corps The Romanian Debacle 1917 Campaign Bessarabia Romania rejoins the war aftermath The Battle of Sellenberk was a World War I military engagement fought between Romanian forces on one side and Central Powers forces (Austria-Hungary and Germany) on the other side.

Opposing the Romanian invasion of Transylvania was the Austro-Hungarian 1st Army under the command of General Arthur Arz von Straussenburg.

[6] However, on 8 September, following the German-Bulgarian victory at the Battle of Turtucaia in Southern Dobruja, the Romanian High Command ordered a halt to the Transylvania offensive.

[7][8] Also on 8 September, the XXXIX Corps of German General Hermann von Staabs assumed responsibility for operations in southern Transylvania.

[12][11] Sellenberk — where Michael the Brave had defeated the Hungarians in 1599 — became the center of the main Romanian position north of the Turnu Roșu Pass.