August 636 CE. 36,000 Muslim soldiers stood against 150,000 Byzantine warriors. Six days later — the world had changed forever. This is the true verified story of Khalid ibn al-Walid (R.A.) — the undefeated Sword of Allah — and the most extraordinary battle in Islamic history. Written like a novel. Verified like a history book. 45 beautifully designed pages. Every fact sourced from Britannica, World History Encyclopedia, and authentic Islamic historical records.