I will go out on a limb and suppose this is for women working admin jobs where there actually is an inside bathroom and not for paratroopers

You think they could get away with treating paratroop, cop, etc moms differently from admin moms?
We had a paralegal airman about 5' 2" 200 before birth, and 180 after birth who could never make weight standards. To avoid being separated for cause, she just kept getting pregnant (and continued wearing the maternity uniform,
after giving birth). She was a good worker and did her job, but was not recruiting poster material. The boss called her
our little bowling ball, in an affectionate way.