an assortment of steampunk military personnel, squaring up to fight an unknown enemy on the other side of a wormhole

An intricate tableau of diverse steampunk military personnel, adorned in brass-fitted uniforms and gear, brandishing ornate clockwork weapons and mechanical gadgets. They stand in a tense formation, silhouetted against a swirling, iridescent wormhole crackling with ethereal energy. The scene is bathed in a warm, sepia-toned light, highlighting the steam and gears emanating from their equipment. In the background, Victorian-era airships and mechanical monstrosities loom, while the unknown enemy's shadowy, tentacled forms are barely visible through the shimmering portal, creating an atmosphere of anticipation and otherworldly dread.