The type of figurative language used is a simile.
The word "like" is used to compare the pair of socks to something else, making it a simile.
If your referring to the flashback of his mother Henry is a little disappointed, he expected a more heroic goodbye. I think she is used in the flashback<span /><span> to juxtapose the very unheroic reality that, Henry now understands is the army, he now realizes the horror of war.</span>
The explain the difference between the rising and setting sun
Put he, doesn't stop trying he gives it his all, and put in a sentence for the answer, where he says something motivational.