WHAT DOES MECHASULTAN MEAN?

Kakumeiki Valvrave 2nd Year Haruto and his comrades continue on to battle in opposition to the forces of Dorssia. Even so, a lot of things keep on being unanswered while in the midst of fight, such as the previous of L-Elf and his fellow soldier's earlier, the Future from the mysterious girl Liselotte, plus the thoughts of Haruto, Shouko, and Saki.