How is Rhyme effective in Disabled by Wilfred Owen?

He alternates between using feminine rhymes such as 'his back will never brace' when he refers to the present to show that he is now weak and vulnerable and masculine rhymes. The juxtaposition of remembrance and the masculine rhymes when he refers to the past, such as 'he'd look a god in kilts',

harshly makes us realize all that he's lost and that he can never be the man that he used to be.