"The Soldier" isn't too difficult of a poem, if we do say so ourselves. There aren't any of those super-crazy, old-school words that sometimes make poems difficult. At times, though, it can be kind of a pain to figure out just what exactly Brooke means. For example, all that stuff about "pulse in the eternal mind" is kind of a curve-ball, and in fact, the last six lines of the poem are sort of tricky. But that's because they are so abstract at first. By line 14, it becomes clear that the speaker is talking about heaven, so the preceding lines can be figured out. Nothing too crazy other than that, folks.