Death's Daughter and the Ebony Blade: Volume 4

"Olivia is moving up in the world. Between her and the First Legion, the Royal Army scored a dazzling victory on the central front that has the empire on the back foot. But the Royal Army is still stretched thin, and there are rumblings from the south that the United City-States of Sutherland is threatening to abandon its neutrality and march on Fernest’s southern border. Fortunately, Field Marshal Cornelius has a plan—he’s giving Olivia a whole army. Now Major General Olivia Valedstorm, she’s put in command of the newly established Eighth Legion. It’ll be up to her, Claudia, and Ashton to whip their army of fresh recruits into shape in time to fight off this new foe!"

[From J-Novel Club]