Ku qor sii wadida faqradan - Maraakiibta dagaalka ee "Kongō" waxay ahaayeen maraakiibta ugu firfircoon ee ciidamada badda ee Japan intii lagu jiray Dagaalkii Labaad ee Adduunka, iyagoo ka qeyb qaatay dagaalladii ugu waaweynaa ee dagaalka. "Hiei" iyo "Kirishima" waxay u adeegeen sidii gacan ku hayn intii lagu jiray weerarkii Pearl Harbor, halka "Kongō" iyo "Haruna" ay taageereen duulaankii Singapore. Afarta qofba waxay ka qayb qaateen dagaaladii Midway
iyo Guadalcanal. "Hiei" iyo "Kirishima" ayaa labaduba lumay intii lagu jiray Dagaalkii Badda ee Guadalcanal bishii Nofeembar 1942, halka "Haruna" iyo "Kongō" ay si wada jir ah u duqeeyeen saldhigga diyaaradaha ee Henderson Field ee Guadalcanal. Labadii doomood ee dagaalka ee Kongō-class-ka ah ee soo hadhay waxay ku qaateen inta badan 1943 iyagoo u kala wareegaya saldhigyada ciidamada badda ee Japan ka hor inta aysan ka qeyb galin ololihii waaweyn ee badda ee 1944. "Haruna" iyo "Kongō" waxay la dagaallameen maraakiibta dusha sare ee Mareykanka intii lagu jiray Dagaalkii Gacanka Leyte dabayaaqadii Oktoobar 1944. "Kongō" waxaa la afduubtay oo ay quustay maraakiibta quustay bishii Nofeembar 1944, halka "Haruna" ay ku dhacday weerar cirka ah oo ka dhacay saldhigga ciidamada badda ee Kure dabayaaqadii bishii Luulyo 1945, laakiin markii dambe la soo saaray oo la burburiyay 1946.