《宋史·列传·卷四十四》
自从西羌反叛，士兵不训练，将领不得其人，以屡次更换的将领驾驭没有训练的士兵，因此战则必败。
自西羌之叛，士不练习，将不得人，以屡易之将驭不练之士，故战则必败。
Ever since the rebellion in the Western Regions, soldiers have not been trained and generals have not been the right people. The generals, who have been replaced repeatedly, have led untrained soldiers, and consequently the battles have been lost without fail.