Movie on TV involving a soldier who writes to an unknown woman during the war and finally meet at train station, she tells him she will be holding/wearing a flower but gives it to an elder lady to see how he re acts

Could it be "The Book and the Rose"?

I think you are right, but I thought the movie was older could there be another movie made earlier?
Can I buy this on dvd? I have looked for this movie for a long time,
Why does the cover look different from one web site to another?

I couldn't find an older movie. I wonder if it has an older feel because it takes place in WW II - maybe they wanted it to look older. I did find a website that talked about the story and all its variations. I wonder if that's why you are seeing different pictures, but the sites for movies I've looked at have the same picture as the Amazon site below.
snopes.com: The Rose

Amazon sells it on DVD.
Amazon.com: The Book and the Rose: A Max Lucado Story (Treasured Stories Collection): Chris Kennedy, Patrick Tuttle, Jeff Bemiss: Movies & TV

This is a cute site of the story.
The Test ~ Max Lucado

You have been a great help to me and I thank you from the bottom on my heart. Now I can get this dvd and watch it many many times, thank you

You're welcome. I enjoyed reading the story, so we both learned something. :)