The S1 canister shell or salient one is a 90mm high-explosive shell used by M808B Main Battle Tanks as early as 2531. Referred to as "grapeshot" by Marines, the shell is extremely effective against massed units and enemy structures caught within its blast radius.[1][2]


  1. Halo Wars: Official Strategy Guide page 42
  2. Halo: The Essential Visual Guide, page 86
Community content is available under CC-BY-SA unless otherwise noted.