At Center Stage, director and choreographers march toward 'A Civil War Christmas'
Nobody bristles and barks orders, but a military aura governs the rehearsal room of "A Civil War Christmas" at Baltimore's Center Stage. A snare drum raps out a martial beat; actors move in crisp lines and turn at sharp angles. Then the troops pause for guidelines coolly mapped out by a coterie of generals: director Rebecca Taichman, choreographer Liz Lerman and Lerman's associate choreographer, Paloma McGregor. Rea…