A brief description of the manga When I Reincarnated I Was a Soldier?! ~A Man Called the Red Shinigami~:
A soldier from another world who has preserved his memory. After being beaten with a club, he regains his past life memory and survives in a world of wars.
Let’s shake off all the bad things that happened in the past life and in this world. Career ladder from the third son of a baronial family to the highest aristocrat.
The protagonist is not the strongest. Magic exists, but he cannot use it. This is the world in which God exists. All this awaits you in a new story!