Ultimately the change in rights and freedoms for Women in post-war era as monumentally significant. They have definitely achieved more rights and freedoms as each of the policies were amended and Altered. This is mainly due to the persistent and tenacious actions taken throughout the women's Liberation movement. A key aspect of the women's liberation movement in the post-war period was the bid for "equal pay and equal value". Numerous other rights and freedoms were demonstrated and protested for, eventually being granted a lot of them. These included divorce laws, which became less discriminatory and more just towards the wife, and the improvement of health care; this resulted in reduced infant mortality, and death during birth. Child care was also put in place to allow women to have jobs in order to accommodate with divorce or low earning husbands.
That's quite a broad subject and could go in a number of directions - plus it has been different internationally. A good start is work by the prolific Sylvia Walby - you can check out her contributions here www.Lancaster.ac.uk/sociology/about-us/people/sylvia-walby
In asking about the role of feminist critics it does not appear you are asking about the role itself of women in the post war years. The critics wish women would stay out of what was men's world and stay in the kitchen. But they know it can't be so most of their work is sub rosa and attacking things like birth control and abortion.
One of the best ways I have seen in history for women's rights to be won is in the Iroquois League, the federation of American Indian tribes in the New York, Pennsylvania region that began some 300 years prior to the colonization of America. The writers of the US Constitution knew of the League and copied from it, but they either did not see, or ignored the part of it that made it so long lasting: the chiefs could be impeached by a quorum of grandmothers. I cannot think of a better way to convey women's values into what is still mostly a male dominant arena.