Females do not have the bone density of males and get stress fractures easily and could not even carry the rifle and backpack at the USMA (West Point) without getting stress fractures so that had to be modified as is so much for females to pass requirements. In 1948, Israel had males and females in the IDF equal in combat and that caused the deaths of males to soar as they compromised their missions to protect the women and the Arabs fought harder to avoid being defeated by females in battle. It was too costly in lives to continue.
That is a special calling for females to sacrifice so much to put haShem and family before all else.