In "The Prince," Machiavelli makes reference to making use of auxiliary armies, either allied or mercenary forces. He suggests that demanding extra forces to provide support to an own army is always risky. The reason is, in victory, the auxiliary army is owed a favor or might act against the party that hires it. Likewise, if the battle is lost, then the employer loses as well.
In the Lamb the entire first stanza consists of questions which only have one Dost thou, but it is applied to the other lines also. In the Tyger, the five questions can be What immortal hand or eye, Could frame thy fearful symmetry?
In what distant deeps or skies.
Burnt the fire of thine eyes?
On what wings dare he aspire?
What the hand, dare seize the fire?
And what shoulder, & what art,
Could twist the sinews of thy heart?
The tones are different insofar that the lamb has gentle questions and beautiful and timid descriptions, while the tyger questions are frightened and amazed that something so fierce exists. The main question in both is how the same god can make both something as gentle as a lamb and as fierce as a tiger.