This text comes from The Canadian Soldiers' Song Book, a historical songbook transcribed on Wikisource and reproduced from the pinned revision linked below.
Scots wha hae wi' Wallace bled,
Scots wham Bruce has aften led,
Welcome to your gory bed,
Or to victory;
Now's the day and now's the hour,
See the front of battle lour,
See approach proud Edward's power,
Chains and slavery.