Final answer:
The phrase "Cannon to the right of them," from Tennyson's 'The Charge of the Light Brigade' uses vivid imagery to underscore the Light Brigade's peril and sacrifice in a clearly unfair fight.
Step-by-step explanation:
The vivid imagery used by Tennyson in "Cannon to the right of them," is used to highlight the danger and the sacrifice they had to make, demonstrating the disparity in what was a significantly unfair fight.
'The Charge of the Light Brigade'.
The line powerfully conveys the perilous situation of the Light Brigade as they were flanked by cannon fire, and despite their valiant effort, were placed in an adverse and fatal position due to tactical errors made by their commanders.