Call of Duty: World War II is a 2017 return to the roots of the original 2003 Call of Duty. Back to World War II, back to traditional movement -- no Infinite Warfare double-jumps and wall-running -- and back to an orchestral score evoking the grit and mud and blood of that pan-global conflict. But it's a modern take on the orchestra, with drums and percussion replaced with explosions, tank treads and other period-accurate historical elements.