During World War I, the British Army defeated the Ottoman Army in Mesopotamia and, subsequently, the League of Nations designated Mesopotamia as a mandate territory, the British Mandate of Mesopotamia.
The British Army defeated the Ottoman Army in Mesopotamia as a mandate territory. This was during World War I. This was subsequently. The British Army defeated the League of Nations designated Mesopotamia as a mandate territory. This was during World War I. This was subsequently. The British Mandate of Mesopotamia was a mandate territory.