The setting may be visualized as a lecture room in which recruits are attending a weapons lecture as a part of their basic training. A group leader is standing in front of a drawing which lays out the parts of a rifle, which he is explaining. He does not, however, have an actual gun as his example, and things are dull. It is a lovely spring day, there are nearby gardens, and one thoroughly bored recruit’s mind keeps slipping away from the lecture to consider the burgeoning fertility of spring. The two voices that we hear in the poem are the instructor’s lecture and the recruit’s musings about nature and the garden. It is fairly easy to be able to establish when (or where) one voice stops and the other begins in each stanza.