The Mighty First, Episode 5, For The Brokenhearted - The Mighty First series, #5

Our world plunged into brutal alien occupation. Young Minerva Carreno heard her nation's call for service. She enlisted straight out of high school into one of the toughest military branches there was---The Global Marines. She faced her fears and overcame self-doubt to graduate, earning her Globe & Anchor. Assignment to the 1st Combat Division would hone her into the battle-hardened warrior Earth's resistance so desperately needed.
After liberating city after city, finally driving the alien invaders from our world, the Allied forces were tasked with taking the war to the Storian home world to ensure total victory. Transitioning from innocent young woman to Marine had been difficult enough. Surviving a protracted intergalactic war tried Minerva to her very soul. Now to leave it behind. How in the world does a warrior rejoin a society that has no understanding of what those sacrifices had done to her?