article_snippet: proclaims allegiance to a terror group in footage filmed in 2013.
article_snippet: A video shows a pledge of allegiance made when the so-called 'Army of Muhammad Brigades' group joined forces with the so-called 'Brigade of Migrants', of which Mohammed Emwazi is believed to have been a member.
article_snippet: The speaker proclaims: 'the so-called 'Army of Muhammad Brigades' group announces unity within the so-called 'Army of Muhammad Brigades' group ranks for the sake of implementing the Shariah and returning this blessed land to God the most glorified and the most high under the leadership of the emir Umar al-Shishani.'
article_snippet: this video shows a pledge of allegiance to Omar al-Shishani, now a commander of ISIS in Syria .
article_snippet: It is believed the man was one of more than 700 fighters in The Migrants Brigade who arrived in the Middle East three years ago.
article_snippet: more than 700 fighters in The Migrants Brigade who arrived in the Middle East three years ago were not part of ISIS at the time this video was filmed, but joined more than 700 fighters in The Migrants Brigade who arrived in the Middle East three years ago in the months that followed.
article_snippet: The red-bearded fanatic became the commander of the Brigade of Migrants, which was initially aligned with al-Qaeda's Jabhat al-Nusra.
article_snippet: The group merged with other jihadists in March 2013 to form the Army of Emigrants and Supporters, a larger and more structured group with a religious council.
highlights_snippet: Man who looks like British-raised ISIS execution makes proclamation .
  
highlights_snippet: Jihadi John swears allegiance to group run by notorious terrorist Omar al-Shishani .
  