by highlighting the irony of war being sweet and glorious...
i say this because
In the poem he is, in effect, saying that it is anything but sweet and proper to die for one's country in a hideous war that eventually took the lives of over 17 million people.
Hi, this line has 9 feet, and this would be an "anapest" - u u / u u / u u /, "u" being unstressed syllable, and "/" being stressed. Here the only stressed syllables are: "light", "sil-", and "moon". The rest of them are unstressed.
This can be true or false because there can be children that don't do all of the exercises and still like gym class.