据历史文献记载,战国时期,黑龙江地区已有了早期的由中华少数民族建立的国家,并组织了军队。最早载入史籍的有生存在黑龙江两岸、东至大海和北至外兴安岭一带的东胡、索离、肃慎等少数民族。随着生产的发展和私有财产的出现,各部族之间发生了战争,并逐渐产生了专事征战的组织— According to historical records, during the Warring States Period, Heilongjiang Province had already had earlier countries established by the Chinese ethnic minorities and organized military forces. The earliest recorded historical records of living in both sides of Heilongjiang, east of the sea and the north to the outer Xingan Mountains Donghu, cable, Sushen and other ethnic minorities. With the development of production and the emergence of private property, wars broke out between the various tribes and gradual emergence of organizations engaged in expeditions -