The purpose of this study is to verify controversial historical facts related to Ethiopia's participation in the Korean War. There were four verification needs identified through previous studies: Ethiopia's motivation to participate in the Korean War, the number of KIA(Killed In Actions) in the Kagnew Battalion, the results of the battle of the Kagnew Battalion, and the length and number of troops dispatched by the Ethiopian army. The research method applied for verification was based on a review of historical literature, and interviews, data collection, and analysis were complementarily applied through field visits to Ethiopia. As a result of studying the four verification needs, first, the records of Ethiopia's motivation to participate in the Korean War needed to be revised. Korean literature consistently explains Ethiopia's motives for participating in the war with historical experience and enthusiasm in Ethiopia's collective security, but this was evaluated as a record that excluded realistic reasons that Ethiopia must consider at the time. Second, recent Korean literature records the results of the Kagnew Battalion's battle as 253 wins out of 253 battles, which needed to be revised. This is because there are cases of the Kagnew Battalion's battle that do not meet this standard even if the meaning of military victory is broadly interpreted. Third, if Korea and Ethiopia have different interpretations of KIA, the records of the number of Kagnew Battalion's KIA may differ. However, it is desirable to unify the number of KIA at the diplomatic level. Fourth, it is reasonable to organize Ethiopia's dispatch period until 1956 for the Kagnew Unit and 1965 for the Ethiopian liaison officers of the UNC. However, the source and evidence for the total number of troops dispatched by the Ethiopian army of 6,037 need to be further verified. This study has academic significance in terms of verifying ambiguous or conflicting historical facts related to Ethiopia's participation in the Korean War, and can also be helpful for ROK-Ethiopia veterans' diplomacy.