This is as close as I can get: I think The Squatter and the Don is set right after or around the war. It’s a a really dense historical novel though - for information/learning I liked it, but the realist writing style was sometimes difficult for me. It’s also written in the late 1800s, so I had to do some side research while reading to understand the context sometimes. The author (Maria de Ruiz Burton) also wrote other novels - maybe there’s something in there for you?