Jesson fought in the Mesopotamian campaign, where on 22 February 1917 he was killed in action.

He realized the mistake of underestimating the importance of the Mesopotamian campaign.

He was appointed a Brigade Major on 11 January 1916, for the Mesopotamian campaign.

The main fighting of the latter group was in Iraq, where large numbers were killed and captured in the failed Mesopotamian campaign.

He established the outposts which made possible the further advance of the British in the Mesopotamian campaign.

The artillery remained on the Western Front when the bulk of the division departed for the Mesopotamian campaign.

Nearly 700,000 Indians fought the Turks in the Mesopotamian campaign.

The Mesopotamian campaign had started in 1914.

The 6th (Poona) Division served in the Mesopotamian campaign.