A more serious war broke out in 1459 and started because Warwick had attacked other country's ships during his time in charge of Calais. Henry asked Warwick to meet to explain what he doing, but Warwick refused. Soon enough, York and Warwick started putting together an army. They were stopped at the Battle of Ludford Bridge and fled England. Henry and the Lancastrians now had control. They ordered that York and Warwick were to be executed if they were found.