Complex sentence: Radar tells Hawkeye and B.J. that someone from Fort Wayne passed through the 4077th and relayed word back home of Frank's affair; when the gossip eventually got back to Louise she hired a divorce attorney.
Split into simpler sentences: Radar tells Hawkeye and B.J. that someone from Fort Wayne passed through the 4077th and relayed word back home of Frank's affair. The gossip eventually got back to Louise Burns and she hired a divorce attorney.