By Sarah N. Lynch and Chris Gallagher WASHINGTON (Reuters) -Prosecutors in the trial of five Oath Keepers members on Friday showed a jury fresh evidence that the right-wing militia group’s founder Stewart Rhodes told his followers ahead of last year’s U.S. Capitol attack there would be a “bloody” war if then-President Donald Trump failed to reverse his 2020 election loss. In numerous text messages, online postings and speeches shown as evidence, Rhodes promoted the use of force and implored Trump to invoke the Insurrection Act, a 19th century U.S. law that empowers presidents to deploy troops …