How did an Anglo-Indian division, fighting its first battle, in an obscure sideshow, facing the worst environmental conditions, fight and win what is possibly the most perfectly fought battle of the First World War? Histories of the Mesopotamia (Iraq) Campaign are overshadowed by the disaster that was the Siege of Kut. However, the battles fought before and after the Siege of Kut showed that British commanders understood the nature of conflict and had the correct tactical approach to battle. Unfortunately, the extreme environmental conditions experienced prevented the decisive blow being delivered against the enemy, resulting in further battles and further casualties. 15th (Indian) Division was a wartime raised division. It consisted of newly raised Indian battalions and British Territorial units originally sent to India to replace Regulars for service in Europe or Gallipoli. They were supported by 6th Cavalry Brigade, another Anglo-Indian formation, Rolls-Royce armoured cars, water-carrying lorries and aviation. All the technology of 1917 came together to deliver a very modern, manoeuvrist battle. The tactics employed used a fixing force to distract the enemy while another force conducted a flanking attack. Simultaneously, cavalry, and later armoured cars, conducted a deeper flanking move to cut off the enemy's retreat. This often required a deep move through waterless desert to the blocking position which usually had the road and river in close proximity. AUTHOR: Paul Knight is a British Army officer and military historian. He holds a PhD in History and is a Fellow of the Royal Historical Society. He is also an experienced historical reenactor with over 20 years re-enacting the 47th Foot during the American War of Independence. 20 b/w photos, 1 b/w map, 1 colour map, 2 charts