Ključ za razumevanje vsega živahnega in plodnega osvobodilnega dela, ki se je odvijalo v Slovenskem Primorju po kapitulaciji Italije, leži v ogromnem političnem in organizacijskem delu, ki so ga činitelji narodnoosvobodilnega boja v Slovenskem Primorju opravili po prvi pokrajinski partijski konferenci (1. in 2. XII. 1942) in prvem pokrajinskem plenumu OF (14. II. 1943). Medtem ko so 1942. leta obstajali v Slovenskem Primorju le štirje okrožni komiteji KPS in odbori OF (Severna Primorska, Gorica, Kras in Trst), se je z odpravo sistema »zaupnikov« in vzpostavitvijo drugih okrožij, ki jih je bilo poleti 1943 čelo petnajst, ter z ustanovitvijo množičnih organizacij v okviru OF (ZSM in SPŽZ), narodnoosvobodilno gibanje razširilo na celo Slovensko Primorje. In tako je to obdobje dalo narodnoosvobodilnemu gibanju v Slovenskem Primorju ono širino in intenzivnost, ki mu je bila potrebna, da. ob dogodku, kakršen je bil kapitulacija Italije, kvalitativno preraste v novo obliko boja — da vzplamti v splošen oborožen upor primorskega ljudstva proti nacionalnemu in socialnemu zatiranju.

The first half of the year 1943 gave the Liberation movement in the Slovene Littoral such a broadness and intensivity that, after the collapse of Italy it grew over into a new form of fighting, into a general armed rising of the Slovene Littoral people against the national and social oppression. In this rising on 11th September 1943, the National Liberation Council for the Slovene Littoral was founded, consisting of twenty-one numbers, who would as the representative of the Littoral Slovene people under the direction of the IOOF (the Executive Committee of the Liberation Front) lead (the liberation war to its happy close. His intention and wish was that the Littoral Slovenes would be united with other Slovenes in the United Slovenia. On the base of this proclamation, issued at the occasion of foundation, the Supreme Command of the Liberation Front on 16th September 1943, proclamated the annexation of the Slovene Littoral to United Slovenia and to New Yugoslavia.