Conversation so far:
what silent films with Gary Cooper were made in 1925?
The Thundering Herd, Wild Horse Mesa.Riders of the Purple Sage, The Lucky Horseshoe and The Trail Rider.“
what other silent films with Gary Cooper were made in 1925?
The Eagle and  Ben-Hur.
did Gary Cooper win any awards for these Silent films released in 1925?
No.

Question: what was his greatest accomplishment?
Self-contained rewrite: what was Gary Cooper's greatest accomplishment?