Complex sentence: Her case is the perhaps most researched Swedish case of the phenomena of females impersonating males to serve in the military during the new modern age and married women, and it was also the cause of a suggestion to introduce a new law regarding homosexuality in Sweden.
Split into simpler sentences: Her case is the perhaps most researched Swedish case of the phenomena of females impersonating males to serve in the military during the modern age. Her actions were the cause of a suggestion to introduce a law regarding homosexuality in Sweden.