Kim Jun played an active role as a soldier of the House Troops(家兵) of Choi military ruler. He became Jeonjeonsungji(殿前承旨), director of House Troops in Choi Woo(崔瑀)’s rule, through meritorious service on his master and recovery of Bukgye(北界) territory against Mongol invader. Kim Jun succeeded in power succession of Choi Hang(崔沆). Owing to this meritorious service, he was offered Byoljang(別將) which was military official. And he was entrusted the mission of commander of House Troops by Choi Hang. Kim Jun strongly formed human bonds with commanders of Choi House Troops and officers of Sambyulcho units in Choi Hang’s rule. Kim Jun allied commanders of House Troops, Sinuigun(神義軍), Yabyulcho(夜別抄), and EungYang Troops(鷹揚軍) who were discontented with Choi Yui(崔竩) Political Power’s foreign and internal policy. And he combined with Daesasung(大司成) Yu Kyung(柳璥) and King Gojong(高宗). Kim Jun formed so called an anti-Choi Yui alliance force(反崔竩連帶勢力). The anti-Choi Yui alliance force eventually raised Muojungbyun(戊午政變) in the 45th year March of King Gojong. The hardcore strength of Muojungbyun were commanders of Choi House Troops and Sinuigun. The majority of these strength were fully invested to Wuisagongsin(衛社功臣). Kim Jun banded together with Sambyulcho generals who were invested to Wuisagongsin through Joongbang(重房) in the beginning of Yu Kyung’s reign. At that time, Kim Jun and Yu Kyung removed remnants of pro-Choi Yui escort force(親崔竩擁衛勢力). Before long, Kim Jun and his brother Kim Seungjun(金承俊) toppled Yu Kyung because of abuse of authority over human resources. In the early part of Kim Jun’s political power, Kim Jun allied with Park Heesil(朴希實), Yi Yeonso(李延紹), Park Songbi(朴松庇), Yim Yeon(林衍), and Yi Gongju(李公柱) who held high rank of Wuisagongsin. But, Kim Jun did not forget to keep in check these high rank Wuisagongsin. Also, he succeeded in drawing out Cha Songwoo(車松祐) and Kim Hongchui(金洪就) who held low rank of Wuisagongsin, as confidential followers. Kim Jun was appointed to Gyojeongbyulgam(敎定別監), Munhasijung (門下侍中) based on trust and support of King Wonjong(元宗) in 1264~ 1265. After this, he considered himself as Younggong(令公) when he was invested to Haeyanghoo(海陽侯). At that time, Younggong Kim Jun made a decision on his own and reinforced his power. Furthermore, he recruited greatly competent archers. Through this recruitment, in latter part of Kim Jun’s political power, we could be thought that Sambyulcho was reorganized to detailed units. The evidence that Kim Jun reorganized Sambyulcho, could be find into wood letters(木簡) of Mado Ship No.3(馬島3號船). One out of this wood letters was written to the phrase, “Wusambeonbyulchodoryungsirang(右三番別抄都領侍郞)”. This phrase show us that Wubyulcho(右別抄) was divided to 3 units. The reason that Kim Jun reorganized Sambyulcho, included following circumstances. First, Kim Jun needed to public strong military power that can refuse Jogun(助軍), census(戶口調査) and Gaegyunghwando(開京還都) demand of Mongol Empire. Second, he wanted to put the brakes on the aim of King Wonjong that was intended to remove Goryeo military rule, drawing authority and influence of Mongol Emperor.