Saga of the Iron Dragon Series by Robert Kroese

Trapped 1300 years in the past, they have one mission: survive. In the 23rd century, humanity has been hunted to the verge of extinction by an alien race. When an exploratory ship accidentally travels back in time to Viking age Scandinavia, the human race is given a second chance. Pursued by the power-hungry King Harald, the four surviving crew members join a ragtag band of Vikings as they pillage their way across Europe... moreTrapped 1300 years in the past, they have one mission: survive. In the 23rd century, humanity has been hunted to the verge of extinction by an alien race. When an exploratory ship accidentally travels back in time to Viking age Scandinavia, the human race is given a second chance. Pursued by the power-hungry King Harald, the four surviving crew members join a ragtag band of Vikings as they pillage their way across Europe. It will take all their ingenuity, courage and technical know-how just to survive. But survival is only the beginning. To save humanity, they must somehow return to the stars. Thus begins a decades-long effort to teach the Vikings to build a craft capable of reaching space—a ship that will come to be known as the Iron Dragon. less

A new beginning, 1300 years in the past... In medieval Europe, three explorers from the distant future begin an ambitious project: build a craft capable of reaching the stars. While their leader oversees the construction of a secret underground base in Iceland, the other two travel thousands of miles to negotiate with the rulers of Europe and recruit the most brilliant minds of the age... moreA new beginning, 1300 years in the past... In medieval Europe, three explorers from the distant future begin an ambitious project: build a craft capable of reaching the stars. While their leader oversees the construction of a secret underground base in Iceland, the other two travel thousands of miles to negotiate with the rulers of Europe and recruit the most brilliant minds of the age. When the Iceland base comes under attack, the travelers try to return to defend their home, but they are trapped in Paris just as an army of 20,000 Vikings lays siege to the city. To survive, they must defend Paris from the hordes of Norsemen and fight their way back to Iceland to save their new home--and keep the dream of the Iron Dragon alive. less

The war against the implacable Cho-ta'an carried a desperate group of humans 1300 years into the past, but the fight for humanity's future is just beginning!Mankind's future among the stars now rests on a ragtag band of Vikings who have taken to the stars. The Norsemen's only hope is to ally with the mysterious people called Truscans, who possess the technology to defeat the aliens... moreThe war against the implacable Cho-ta'an carried a desperate group of humans 1300 years into the past, but the fight for humanity's future is just beginning!Mankind's future among the stars now rests on a ragtag band of Vikings who have taken to the stars. The Norsemen's only hope is to ally with the mysterious people called Truscans, who possess the technology to defeat the aliens. But where did the Truscans come from? What do they want? Can they be trusted as allies against the Cho-ta'an?The Legacy of the Iron Dragon continues the story began in the Dragon Award-nominated The Dream of the Iron Dragon in a sweeping saga that carries us from war-ravaged planets in the twenty-third century to first century Judea, where the fate of the Roman Empire is being decided. less