In 1281, an army of 140 thousand soldiers in total departed for Japan, consisting of the Eastern Route Army of 40,000 soldiers mainly from the Yuan and Goryeo army and the Southern Yangtze Army of 100,000 soldiers mainly from the former Southern Sung army.
1281年（日本の弘安四年・元の至元十八年）、元・高麗軍を主力とした東路軍4万と、旧南宋軍を主力とした江南軍10万、計14万の軍が日本に向けて出発した。