michael cusick is here, retired. i harassed him for information. the historians here, a lot of civil war experts here, i want a little truth in advertising to start. i'm not a civil war historian. i don't even play one on tv. i covered the cia for a number of years my last two biographies as mentioned, were made during world war ii. one focus on ahead of franklin roosevelt. the other one was on four key tournament who became cia directors. my next book, i decided to switch wars and write an ensemble biography of fort union of the union spies. i'm proud i made the switch. when we think of the civil war, we have this image of the imposing stiff in matthew brady photographs. then thousands of those charges. that all happened but what also happened on this conflict was a revolution in war fighting technology like the world had never seen. it's like rival canon, it could deliver more accurate longer ranges. enter railroad that could move supplies to the front. the telegraph that could connect generals on the battlefield with communications. this is a wa