1. Battle of Somme.
2. First Battle of the Marne.
3. Battle of Verdun.
4. Battle of Tannenberg.
5. Second Battle of the Marne.
6. First Battle of Ypres.
7. Battle of Jutland.
8. Battle of Passchendaele.
9. Meuse-Argonne offensive.
10. Battle of Amiens.
11. Battle of Cambrai.
12. Spring Offensive.
13. Brusilov offensive.
14. Battle of Megiddo.
15. Battle of Caporetto.
16. Battle of Mons.
17. Second Battle of Ypres.
18. Battle of Gallipoli.
19. Second Battle of the Somme.
20. Battle of Galicia.
21. Battle of Heligoland Bight.
22. Battles of the Isonzo.
I'm so sorry if this is incorrect. This is research based. I really hope this helps you. I'm sorry if I'm too late. Have an amazing day/night! :)