RICHMOND, Va. — Hundreds of terror suspects have been tried in federal courts since the 2001 attacks, but a case unfolding in Virginia differs from most in at least one key respect.Irek Hamidullin was a combatant captured on the battlefield — not a financier, recruiter or schemer arrested outside the theater of war, like so many of the terrorist suspects who have been tried by civilian courts instead of by the U.S. military.The Russian military veteran is charged with leading a Taliban attack on U.S. forces in …