In literature, conflict is a literary element that involves a struggle between two opposing forces, usually a protagonist and an antagonist.
Narrative poems introduce a conflict, or problem. Poets build the conflict, which gives the piece its tension, through the use of poetic devices such as rhyme as well as plot elements such as climax. Writing a poem with a conflict requires thinking up a story and using poetic devices to convey the narrative.

“My subject is War, and the pity of War. The Poetry is in the Pity” Wilfred Owen wrote these words in 1918