Khalid ibn Walid, the first Muslim general of the Rashidun Caliphate to conduct a conquest in foreign land, during his campaign against the Sassanid Persian Empire (Iraq 633 - 634) and Byzantine Empire (Syria 634 - 638) developed brilliant tactics that he used effectively against both the Sassanid army and the Byzantine army.
Khalid bin Walid, jenderal Muslim pertama dalam Kekhalifahan Rasyidin yang menaklukkan daerah asing, selama kampanye militernya melawan Kekaisaran Persia Sassaniyah (Irak 633–634) dan Kekaisaran Bizantium (Suriah 634–638) mengembangkan siasat brilian yang dia gunakan secara efektif baik dalam melawan pasukan Sassaniyah maupun pasukan Bizantium.