This incredibly helpful summary guide of all the poems in Power and Conflict is an absolute must.
Look at the sample first entry here:
Ozymandias by Percy Shelley
Theme: The poem explores the transient nature of power and the inevitable decay of all things, including empires and monuments.
Purpose: Shelley critiques the arrogance and exaggerated self-confidence of rulers who believe their power will last forever and highlights the fleeting nature of human achievements.
Methods: Shelley uses vivid imagery of a ruined statue in the desert to convey the passage of time and the insignificance of human endeavours in the face of nature's power.