WHICH fearless and brave deeds? For a good discussion of this poem by Tennyson, see the link below. Perhaps you will find the answer to your question in the analysis, because you have not identified which particular deeds you are referring to - and I am not sure if you mean the poem in its entirety, or if you have to cite specific examples. Make sure you cite any information you take verbatim from the source. Also, make sure you understand what you write, so that you can defend your ideas. Try to put your explanation in your own words. Good luck.