The corps took part in many operations against Germans and Italians forces prior to the surrender of Italy on 8 September 1943. One of the most significant was the German Operation Adler.
30th Jugoslav Division, based on 17th SNOB (Slovenian Brigade of National Liberation) "Simon Gregorčič" and 18th SNOUB (Slovenian Assault Brigade of National Liberation) "Bazoviška"
31st Jugoslav Division, based on 3rd (initially 6th bde) SNOB "Ivan Gradnik", 7th SNOB "France Prešeren" and 16th SNOB "Janko Premrl Vojko".[4]
19th SNOB (Slovenian Brigade of National Liberation) "Srečko Kosovel"[5]
Division Garibaldi "Natisone" (Italian partisans), composed from 156th partisan brigade "Bruno Buozzi" and 157th brigade "Guido Picelli"
20th brigade "Garibaldi Triestina", formed with Italian partisans
^Nikola Anić, Sekula Joksimović, Mirko Gutić, «Narodno oslobodilačka vojska Jogoslavije. Pregled Razvoja Oruzanih Snaga Narodnooslobodilnackog pokreta 1941—1945», Izdaje Vojnoistorijski institut, Beograd, 1982.