The 1968 campaign has the war start when the Soviet Politburo perceives the Johnson administration's lack of response to the Prague Spring and resulting Soviet occupation of Czechoslovakia as a sign of weakness, and decides to invade West Germany while America is focused on Vietnam.Alternate History: There are three campaigns, each being a different alternate timeline.The same is true for the South China Sea campaign in 2000 fail to sink the PLA Navy's Xia class boomer, and the US will be held hostage by it's nuclear missiles at the negotiating table.