The forces can't get enough men to join, 50% of the workforce now is female. Accept it - and plan accordingly.
In days of old knights wielded broadswords, now the majority wield guns, females as prominently as males. They can't carry as much as men, but do you just have less troops or a proportion who can carry less but increase mechanisation and reduce weight by new materials?
Facts on the ground have a way of trumping theories on paper.