function replacer(str, p1, offset, s) {
alert(str);
alert(p1);
return p1;
}
newString = 'early_ship_hull_cruiser:0 "Early Cruiser Hull"'.replace(/:0 "(\w*)/, replacer);
const str = `
RAM_smith_T1:0 "Anführer von Amerika"
RAM_smith_T2:0 "Popular"
RAM_smith_T3:0 "Suppressor of the Resistance"
RAM_smith_T4:0 "Folower of the Reich's Orders"
RAM_smith_T5:0 "Tied by German Oligarchy"
umc_leader_john_smith_ram_desc:0 ""`
const regExp = (/:0 "([^"]+)"/ig)
let found
while (found = regExp.exec(str)) {
console.log(found[1])
}