I am the Heroic Knight of the Interstellar Nation is a Manga/Manhwa/Manhua in english language, manga series, english chapters have been translated and you can read them here. You are reading chapters on www.mgeko.cc fastest updating comic site. The Summary is

In a remote part of the interstellar nation of the Algrand Empire- In 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!?