What is the tone of poem in suicide trenches?

The tone of the poem "Suicide in the Trenches" by Siegfried Sassoon is one of despair, futility, and hopelessness. The speaker, who is a soldier in the trenches during World War I, describes the horrors he experiences in chilling detail. He sees men dying in agonizing ways, and he is forced to kill enemy soldiers in order to survive. He is haunted by the constant fear of death, and he feels like he is trapped in a cycle of violence that he cannot escape. As a result, he is filled with a sense of despair and hopelessness, and he can only see death as the only way to end his suffering. The poem is also marked by a sense of irony, as the title suggests that the speaker is choosing to take his own life rather than continue to fight. This irony adds to the overall sense of tragedy and futility, and it emphasizes the speaker's deep disillusionment with the war.