4, plus add-ons Battle of Kursk, Sudden Strike 4: Road to Dunkirk and Finland - Winter Storm, as well as three exclusive maps for Xbox One. With a total of 31 missions across 5 demanding campaigns and more than 120 authentic military units, Sudden Strike 4: European Battlefields Edition provides hundreds of hours’ worth of strategic challenges. Exploit the weak spots of enemy tanks, set up the perfect ambush, occupy buildings with infantry, outmaneuver the enemy or unleash devastating air strikes.