Here is the Winter who mentioned in the regimental history, perhaps he is Oscar Winter:
July 1, 1915: Winter tr. from 2. to 4. and promoted to Lt. 12. 12. 15 (p. 163)
entire 1916: Lt. Winter, 4., promoted 10. 12. 15 (p. 211)
Jan 1, 1917: Adj. Lt. Winter, Odr.-Offz. Stab II (F.) Abtl. (p. 218)
July 1, 1917: Adj. Lt. Winter, Odr.-Offz. Stab II (F.) Abtl. (p. 261)
Jan 1, 1918: Adj. Lt. Winter Stab II (F.) Abtl. - zur Kur in Bad Rehburg 17. 12. 17 to 12. 2. 18 (p. 350)
July 1, 1918: Adj. Lt. Winter II (F.) Abtl.until 29. 9. 18, sick to lazarett and then tr. to II. Ers. Abt. FAR46 (p. 416)
* from 12. 7. to 15. 8. Regt. Adj. in place of Lt. d. R. Richter