"A Tower Of Strength"

Context: King Richard and his army are on Bosworth field. The opposing army is led by Henry, Earl of Richmond, afterwards King Henry VII. Richmond's follower, Blunt, says about Richard: "He hath no friends, but what are friends for fear, which in his dearest need will fly from him." Richard is told that his enemies number only six or seven thousand. He then reassures his men and himself in his next speech.

Why our battalion trebles that account,
Besides, the King's name is a tower of strength,
Which they upon the adverse faction want.
. . . .
Let's lack no discipline, make no delay,
For lords, to-morrow is a busy day.