Why did Omar Ibn Al-Khattab remove Khalid Ibn Al-Walid from leading the armies despite his victories?

The real reason behind the Commander of the Faithful, Umar ibn al-Khattab's — may Allah be pleased with him — dismissal of the commander Khalid ibn al-Walid — may Allah be pleased with him — was Umar's fear that it would be said: "He is the maker of victory," or that people would be misguided by him. This demonstrates his foresight and his concern for the soundness of Muslims' beliefs. As for other reasons mentioned by some historians or propagated by enemies of Islam and Orientalists, they have no basis in truth.