Pontoon bridge in 638. The army of the Umayyad Caliphate built a pontoon bridge over the Bosporus in 717 during the Siege of Constantinople (717–718). The Carolingian army of Charlemagne constructed a portable pontoon bridge of anchored boats bound together and used it to cross the Danube during campaigns against the Avar Khaganate in the 790s. Charlemagne's army built two fortified pontoon bridges across the Elbe in 789 during a campaign against the Slavic Veleti. The German army of Otto the Great employed three pontoon bridges, made from pre-fabricated materials, to rapidly cross the Recknitz river at the Battle on the Raxa
Junk Jack help keep players who may have left "Junk Jack" due to frustration over difficulty. At April 27th, Pixbits released Junk Jack X for steam, but they have now returned the game to the original title "Junk Jack". Junk Jack Junk Jack is an action-adventure sandbox video game by Italian developer Pixbits, originally released on iOS in 2011. A sequel entitled Junk Jack X was released on August 29, 2013. Junk Jack X has recently been renamed to Junk Jack, and the original game has been renamed to Junk Jack Retro. "Junk Jack" is a 2D sandbox game where the player