By Bruno Savill De Jong — For many the past is another country, and war is a different world. WW2 is a thoroughly-documented period, but one fast fading from living memory, remaining unknowable to those not there. Joseph Sieracki adapts his grandfather Lenny’s real-life letter home from the frontlines in A Letter to Jo, a January graphic novel from IDW / Top Shelf. Sieracki does so to revive WW2 from being a historical artifact and illustrate his frontline experiences, becoming a bridge across time and continents. Lenny had only just graduated high school before he enlisted, as well as gotten engaged to Josephine, Sieracki’s grandmother and the letter’s recipient. Like these young men, A Letter to Jo is admirable but also premature, taking readers to the frontlines of warfare, but not crossing beyond them.