He went to the front in the Gosannen no Eki (the Later Three Years' War [1083 - 1087]) when he was 16 years old; 'Oshu-gosannen-ki' (A Chronicle of Later Three Years' War in Oshu) includes an anecdote in which he kept fighting in spite of his right eye being shot by an enemy soldier.
16歳の頃、後三年の役（1083年-1087年）に従軍した景政が、右目を射られながらも奮闘した逸話が「奥州後三年記」に残されている。