It depends on the women. Women are probably less familiar with combat arms. The army is used to seeing women in traditional occupations, for instance as nurses, clerks, dieticians or logistics experts. Occasionally, women are encouraged to join a combat unit. People in recruitment centres may have been told that they have to recruit women into combat units, but their beliefs mean that they are not very much inclined to encourage women to join combat units.
I have not done any research and I may be mistaken, but according to these statistics, 2.9% of the members of combat units are women. It's not even 3%.