What a peculiar article.  Transgender people believe they are the opposite gender and are just trapped in the wrong body. No evidence is given in this article that any of these people believed this. One woman liked dressing in men's clothes.  She didn't claim to be a man.  Others indulged her eccentricity, but I've always been told that crossdressers, like this woman, are not the same as transgender people.  

"Researchers at the National Archives have found evidence that at least 250 women dressed as men to fight in the 1860s, some motivated by ideology, some by a taste for adventure and some by the need for a job. Most of those who survived presumably returned to their lives as women. But others continued to live as men after the war."  The fact that women DISGUISED themselves to do the jobs they wanted in a world where women weren't allowed has absolutely nothing to do with women or men who truly believe they are the opposite sex from their biology.