Navy

Now, that's a recruitment poster.

Wiki featured this image today. Along with this text:

A 1917 recruitment poster for women to join the United States Navy. In March 1917, Secretary of the Navy Josephus Daniels realized that the Naval Reserve Act of 1916 used the word "yeoman" instead of "man" or "male", and allowed for the induction of "all persons who may be capable of performing special useful service for coastal defense." He began enlisting females as Yeoman (F), and in less than a month the Navy officially swore in Loretta Perfectus Walsh, the first female sailor in U.S. history. At the time they were popularly referred to as "yeomanettes" or even "yeowomen".
Artist: Howard Chandler Christy

To this day, women in the Navy struggle with getting decent postings and equitable treatment. Early adopters oft get so wrapped up in being first, they forget to finish the job.