By 1918, Turkey was in dire need of rifles...they were losing them throughout Palestine as the Aussie Light Horse was sweeping up the Turks on the road to Jerusalem and Damascus... Mauser Oberndorf was tasked with supplying Turkey with New Gew98s from its production in 1918...that's why 1918 Obies are rare in European collections or as US/Brit etc.bringbacks from WWI in Europe...they all (almost all) went to Turkey, from where they are (since 1980s) Surfacing.
The majority of Turkish Gew98s came from 1917-18 deliveries...by 1923, Turkey was buying New Vz98/22 from the new factory at Brno in Czechoslovakia. (ZB)
Nobody "Gave" rifles to Turkey after WW I, least of all the perfidious British...who actively "demilitarised" Turkish rifles during the Occupation of 1918-1920 (Turkish troops surrendered the Bolts, and went home with Bolt-less rifles..by 1923, ZB had a contract to replace "Lost" Bolts (both Gew98 and more commonly, Gew88 Komission Bolts).
The Only "allied" Occupier of Turkey (Italy) to give Guns to the Turks was because they (Italy) had been dudded by the British and French on territorial claims in the Adriatic (Ethnic Italian zones in the new Yugoslavia)...in a fit of (generous) pique, they "Lost" their contingent's Rifles etc, when they evacuated their Zone of occupation in Southern Turkey (of course, the Local Turkish Military Commander, just as generously "Found" the rifles after the Italians had departed....The French and British actually were "Pushed" out of Northern Turkey ( Ankara and Istanbul) by Ataturk's Forces (" Firmly but Gently persuaded").
Many of the Gew98s were then subsequently rebuilt in the 1930s to 1950s refurbishment programs (See my Parallax/Yukos Board survey) into M98/37 Short rifles, M98/38 Short rifles, M98/37 Long Rifles, and lastly, the M98/54 ATF rebuilds; most of the rebuilds were "scrubbed", so that only the three righthand inspection marks notify of the German origin, although occasionally the original Obie address is still visible under the "AsFa Ankara markings.
Un-reconstructed Gew98s had only the Property mark of the Crescent Moon added,
and also were used , mostly in recruit training, up to the 1960s.
Regards, Doc AV