Knin Operation (Kninska operacija) was a major Yugoslav Partisan operation during World War II in Yugoslavia launched by the 8th Dalmatian Corps from 7 November to 9 December 1944 with the purpose of destroying German, Ustaše and Chetnik formations in North Dalmatia and the city of Knin, then part of the Independent State of Croatia. It was the final part of the 8th Crops offensive for the liberation of Dalmatia which began on 12 September 1944. The Knin operation had three phases: Initial battles on approaches to Knin from 7 November to 25 November, main battle and liberation of Knin from 26 November to 4 December, and final battles and pursuit of retreating Axis forces to Otrić in Lika from 5 December to 9 December.
Following the liberation of Šibenik and Drniš, the forces of the 26th Division pursued the Germans towards Knin, but met fierce resistance south of the city. Soon the Command of the 8th Corps started grouping its forces for the attack on Knin. Since the Axis lost most of Dalmatia in the previous months, the Command expected that the German forces will leave Knin shortly after the attack. However, subsequent events showed that their estimates were not realistic. The XV Mountain Corps headquarters was ordered to hold Knin at all costs to stop the advance of 8th Corps towards Lika and Bosnia. The Germans also wanted to secure the right flank of their units fighting on the Syrmian Front and protect the retreating columns from Greece and Albania through Sarajevo and Banja Luka.
The first attacks began on 7 November and were directed to Strmica north of Knin and the road to Bosansko Grahovo. The 9th Assault Brigade of the 20th Dalmatian Division captured Veljun and Golubić near Knin and endangered the city form the North-East, but German and Chetnik counter-attacks, as well as harsh cold weather and snow, stopped their advance and minimized further front changes. South of Knin the 26th Division began attacking German defenses at noon on 7 November, but met fierce German resistance. They managed to take the mountain of Promina and push the Germans north towards Kaldrma, but their plan to surround them at Kosovo polje was quickly thwarted by German reinforcements sent from Knin. The 9th Division was located in Herzegovina preventing the arrival of reinforcements to Knin and securing the rear area of the 20th and 26th Divisions. Meanwhile, the 19th Division fought off the attacks of the 373rd Wehrmacht Division along Knin - Zrmanja road near the river Krka.
As soon as the German attacks were repulsed, there was a small stalemate on the front. The plan of the 8th Corps Command to take Knin quickly was not achieved. Initial attacks of the 20th and 26th Divisions gave no significant results, and the idea that the 20th Division could take Knin alone was unrealistic. Both sides have taken advantage of the two week stalemate following the 20th Dalmatian Division failure to take Knin. The German XV Mountain Corps tried to organize a better defense of Knin, building fortifications and making some minor changes in the operating schedule. 583rd Naval Infantry Battalion was withdrawn, while the demoralized remains of the 6th and 7th Ustasha brigades and 3rd Croatian Home Defense Brigade were sent to Bihać on 12 November, leaving around 10,000 German soldiers and 4,500 Chetniks in the Knin area.
The German 264th Division was completely destroyed and was removed from the High Command active divisions list, while the 373rd and 392nd Legionar Divisions were severely damaged. The XV Mountain Corps had 6,555 killed or wounded and 4,285 captured soldiers. The Chetniks of Momčilo Đujić retreated with German help to Karlovac area together with Chetnik formations from Bosnia and Lika. The 8th Corps had 677 killed, 2,439 wounded and 126 missing soldiers. The next major offensive of the 8th Corps was the battle of Mostar.