Around the world, millions of men serve in their countries' militaries, be it on land, on the seas, or in the air. But while many militaries have opened all positions to women, even those on the front lines, others remain closed. Countries have cited a number of reasons for their policies, including changing views of women and the military, conscription, and economic and demographic trends. Topics also include sexual harassment, recruitment, and views on women's physicality and strength.

United States and Canada --Latin America and the Caribbean -- Europe -- North Africa and the Middle East -- Sub-Saharan Africa -- Central and East Asia -- South and Southeast Asia -- Oceania.