What is is the effect of enjambment in poetry?

Enjambment has the effect of encouraging the reader to continue reading from one line to the next, since most of the time a line of poetry that's enjambed won't make complete sense until the reader finishes the clause or sentence on the following line or lines.

Explanation:

thick as the foliage of the waving wood; the figurative language that is used here is referring to a battle. there are two mountains that are facing opposite of each other, and they have armies better stick like a forest.

the reason some people sacrifice their own life for another person's life could be that they are in love with them and would do anything to keep them safe a protected even if that means risking their life in the process