The Fly by Katherine Mansfield is often taught as a short, symbolic story — but its real power lies in what it reveals about post-war grief, masculinity, and emotional repression. Written in the aftermath of the First World War, The Fly explores what happens when loss is expected to be over, yet trauma quietly persists beneath ordinary life. This post is designed for English teachers looking to bridge WW1 poetry and post-war prose, showing how lived experience shapes literature long after conflict has ended. It explores Mansfield’s personal connection to war, the symbolism of the fly as repeated trauma, and the story’s unsettling portrayal of power, control, and suppressed emotion. With classroom-ready activity ideas and links to wider conflict poetry, this deep dive helps teachers position The Fly as more than a standalone short story — but as part of a broader conversation about aftermath, memory, and the long shadow of war.