The invincible looking tank, the bully on the battlefield. See how these behemoths are constructed, and how they are near perfect engineering feats. First Broadcast in 2004. Content Provided By ITV Global. Any Queries Please Contact Us at hello@littledotstudios.com Subscribe to Spark for more amazing science, tech and engineering videos – https://goo.gl/LIrlur Follow us on Facebook: https://www.facebook.com/SparkDocs/ Follow us on Instagram: https://www.instagram.com/spark_chann… #Tank #Militarytechnology #militaryvehicles #engineering #technoloogy #science #construction #building #history