《隋书·列传·卷二十一》
开皇十八年，发起辽东战争，授宇文弼为元帅汉王府司马，仍兼任行军总管。
十八年，辽东之役，授元帅汉王府司马，仍寻领行军总管。
In the 18th year of the Kaihuang era, the Liaodong War began, and Uen Pi was appointed as the Marshal, the Prince Han's aide, and the acting governor of the military.