though mesopotamia and eastern anatolia ( western armenia ) were eventually reconquered Conquering by the safavids under the reign of shah abbas the great ( r. unk ) , they would be permanently lost Earnings_and_losses to the ottomans by the 1639 treaty Sign_agreement of unk .

the british had some 50,000 well-trained Education_teaching and well-equipped Supply troops : mostly british india troops of the indian expeditionary force d together with the 13th ( western ) division of the british army forming Cause_to_amalgamate the mesopotamia expeditionary force .