My attempt (102.3 MB):
https://mega.co.nz/#!HQVGgQDS!RaO3OT7mWTThJ3n9Ej1jGhcumiSCo0m7F5GN7B7 v2JM
Tracklist:
01. Main Theme
02. The Star Spangled Banner
03. Main Theme
04. Credits
05. Sadness
06. Empty
07. War Makes Men Mad
08. Baron Von Dorf
09. Sneaky
10. French Party
11. Credits 2
12. Fight
13. Credits 2
14. Calm
15. No Turning Back
16. No Hope
17. Rest
18. Help The Wounded
19. In a Hurry
20. Intense
21. War
22. The Great War
23. Dance
24. Credits
25. Loss
26. Time Has Come
27. Paris
28. Battle Lost
29. Hope For Better
30. Never Ending
31. Prepare
32. Beauty
33. Fight For Victory
34. Evil
35. Horror
36. Time To Relax
37. Final Battle
38. Battle To The Last
39. Ride
I've been looking everywhere for this. Thank you for your attempt! Although I'd like to note the tracks starting at #20 and higher seems to all contain a piece of the previous track in the beginning.
*Edit* Here was what I managed to find:
http://www.mediafire.com/download/8turo30cgxv5eae/Valiant+Hearts+The+Great+War+%28Original+Game+Soun dtrack%29.rar
Tracklist:
1. Little Trinketry - Daniel Jacob Teper
2. Broken Wings - Clinton Patrick Rusich
3. En Avant La Musique - Manuel Dante Mathieu Faivre, Miguel Vladimir Saboga & Yvo Abadi
4. Escape the Apocalypse - Francisco Becker & Moritz Bintig
5. Never the Same - Daniel Aaron Martinez
6. Masked Like the Night - Rael Jones & Michael Price
7. For Catrin - Daniel Jacob Teper & James Ross McNair
8. Get Aboard - Daryl Neil Alexander Griffith
9. The Final Wait - Bruno Pierre Emmanuel Alexiu
10. Dark Secrets - Gregor Narholz
11. In Remembrance - Ann Moore
12. Mother Cloud - Lorne David Roderick Balfe
13. In the Line of Fire - John Devereaux
14. Comme Un Pigeon - Leo Daniel Nissim & Royo Serge Alain Utge
15. Death Toll - Gregor Narholz
16. The Ultimate Spy - Gregor Narholz
17. Deep Loneliness - Valeriy Antonyuk
18. Nurture - Stephen Mark Satterthwaite, Alex Johnson & Christopher James Allen
19. Lonely Pebble - Daniel Jacob Teper
20. Dream within Dreams - Ian Paul Livingstone