These photos show women fighters from around the world in frontline combat jobs

• Almost three years have passed since the US military announced it would open combat roles to women.
• In September, Secretary of Defense Jim Mattis said the jury is still out when it comes to women's performance in these newly integrated units.
• Despite women's roles in combat support units that often placed them in the line of fire, the US is one of the last western nations to open positions in infantry, artillery, and special operations to women.

In 2015, the US military joined the majority of the western world when Defense Department officials announced women would finally be able to serve in combat-oriented roles.

Although women were no strangers to combat - supportive roles in logistics and combat medicine, aviation and in warships, among others, often brought them under enemy fire - they are now able to serve in roles previously reserved for men, including infantry, artillery, and special operations.

Before US officials decided to make the shift, they looked to foreign militaries, many of which have allowed women in these positions for years or even decades. Here's a look at some of them.