The ongoing series started in April 2011 and the original 2006 issue was republished in October of that year as the Encore Edition.
'68 is a four-issue mini-series covering the period of February 13 and 14, 1968, at the start of the zombie outbreak in Vietnam and the United States.
The story follows the defense of Tan Son Nhat International Airport in Saigon by US troops against a combined force of both VC soldiers and zombies.
Also included is the story of a group of US soldiers trying to survive on the Mekong river and the parents of one of the main characters back in the United States who are trapped in the now overrun New York City.
It follows a United States Marine who is waging his personal war against both the VC and the zombie hordes in the jungles far west of Da Nang, on the border with Laos.