Anyway, it would be impossible to change the stride to 27, all the pace sticks would require recalibrating and there's not enough money left in the budget.
There is a 24" setting on issue pace sticks, a length of stride that my countrymen who join the Colonial Air Force are quite happy to march at.
To be honest the knowledge that marching at a 30" stride can cause injuries to females isn't anything new, Hill et al (1996) published a paper on this, as have quite a few others.