I also enjoy the "classics" as the triple pen name implies. A belated welcome to WDC my friend from across the pond. (do folks say that anymore?) anyway...
This is very well written, and I like the way you've mentioned that glory truly is worth the sacrifice. Yet they ask nothing of us who seek help from danger summed up perfectly in the last 4 lines of the 2nd stanza. While asking forgiveness of one whom isn't mentioned in the last stanza, but knowing it is close to the parable, "Their is nothing greater than to give one's life for a friend." When actually they are strangers, but to them doesn't matter.
I would have given a 5 rating, but the last 4 lines in stanza 1 don't rhyme as the others, also the 1st two lines of stanza 3. But I'm sure by the talent you have showed here, this poem should be no problem to become even better!
Frank aka TBW