Watch Highway to Hell: The Battle of Mosul (2017) : Full Movie Online Free Across three trips to the front-line beginning last October, and under the echoes of snipers and shells, two film-makers tell the story of the Iraqi assault on Mosul: 'the biggest battle anywhere on the planet this century.' At the centre of IS power, the battle's result will have a huge impact on the future of IS and terrorism across the globe.