Atashi wa Seikan Kokka no Eiyuu Kishi!

In a remote part of the interstellar nation of the Algrand Empire, the territory of Count Banfield. A young girl named Emma takes her first step as a knight, admiring the lord who once saved her land. However her first battle was a failure and was subsequently branded a failure and is left on a remote planet. To make matters worse, she's burdened with leading a lackluster unit with no motivation—and she's pushed forward!?

(Source: Overlap, translated)