The Always Losing General has Fallen Again is a Manga/Manhwa/Manhua in english language, Fantasy 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

"You fought twice against my father, Rodias, and once with my brother, Shalk. You lost every battle, but you're still alive." Tina's voice was a bit ecstatic. Tina, the daughter of the leader from the world's strongest cavalry corps, the Vassamund cavalry, got to meet Du Darcus, an unorthodox hero with the nickname "the Always losing General" in her first time going on the battlefield. This is a fantasy war story following a hero named Du Darcus, his follower Tina, the princess general Sharna, and other attractive characters' way of life in a war torn world that's full of conspiracies.