Okrugi harbi, dar SSSR ittihodiyai territoriyavii umumiqushunii qismho, soedineniyam, donishkadahoi harbi va muassisahoi gunoguni mahallii harbist. Ba Okrugi harbi farmondehi qushunhoi okrug, ki tobei Vazorati mudofia ast, rokhbari mekunad. Dar Rossiya avvalin Okrughoi harbi solhoi 1862—64 tashkil yoftaand. Dar SSSR avvalin 6 Okrugi harbii Yaroslavl, Moskva, Oryol, Belomor, Ural va Privoljsk marti (1918) dar davrai Jangi grajdani (1918— 20) bo maqsadi tayyor namudani rezervi azami qushunho baroi fronthoi amalkunanda tashkil karda shudand.
Minbad vobasta ba masalahoi mudofiai Ittifoqi Soveti va inkishofi Quvvahoi Musallahi SSSR adadi okrughoi harbi tagyir yoft. Macalan, pesh az Jangi Buzurgi Vatani (1941—45) 16 Okrugi harbi va 1 front vujud dosht, pas az jang (az soli 1945) 33 Okrugi harbi bud, to oktyabr 1946 boshad, adadi onho kam karda shud, 21 Okrugi harbi mond. Farmondehi qushunhoi Okrugi harbi chorabinihoi harbiro bo yorii shtabi okrug, upravleniyai siyosi va idoravu shubahoi digari okrug ba amal meorad. Okrugi harbi dar baze mamlakathoi sotsialisti (RDG, RSSCh va digar) va kapitalisti (ShMA, Fransiya, Argentina, Belgiya va digar) ham vujud dorad.