Described as the 'shorthand of mathematics', the Trachtenberg system only requires the ability to count from one to eleven. Using a series of simplified keys it allows anyone to master calculations, giving greater speed, ease in handling numbers and increased accuracy.Jakow Trachtenberg believed that everyone is born with phenomenal abilities to calculate. He devised a set of rules that allows every child to make multiplication, division, addition, subtraction and square-root calculations with unerring accuracy and at remarkable speed. It is the perfect way to gain confidence with numbers.

    Short on every resource but the intelligence of their personnel, Exploration Command goes where no human has gone before, discovering new worlds, species and civilizations, pushing the boundaries of knowledge, and always on the lookout for new discoveries that could help the Empire in its struggle against the invader. In this volume are three novelettes about Exploration Command, the scientific part of the Fleet. In Retribution, a Command team finds a devastated alien civilization being aided by missionaries from the Empire. Or are they? In Timeless, an ancient derelict is found in a place where no ship should be. Does it hide the secrets to a technology the Empire has sought for over a thousand years? And in They Don't Care, alien species are being wiped out by a renegade race. Can a single two ship team stop them, or will more species go into the long night? For those readers of Exodus: Empires at War, these stories fill in some of the background of the Empire and add to the series. For newcomers, they are a great introduction to the series.

    The armies of North and South stand on the brink of America’s civil war. Nathanial Starbuck arrives in the capital of the Confederate South, where he enlists in an elite regiment. He is a northern boy fighting for the southern cause. But nothing can prepare him for the shocking violence to follow in the war which broke America in two.COPPERHEADNathanial Starbuck is a Copperhead: a northerner fighting for the rebel South in America’s Civil War. Expelled from the Faulconer Legion, Starbuck must travel a hard road before he can rejoin his comrades. His journey will take him through the savage prisons of Richmond, across the blood-sodden battlefields of Virginia, and into the deadly high command of the northern army.BATTLE FLAGThe epic battle for control of the Confederate capital continues through the hot summer of 1862. It’s a battle that Captain Nate Starbuck, a Yankee fighting for the Southern cause, has to survive and win.THE BLOODY GROUNDIt is late summer 1862 and the Confederacy is invading the United States of America.Nate Starbuck, a northern preacher’s son fighting for the rebel South, is given command of a punishment battalion – a despised unit of shirkers and cowards. His enemies expect it to be his downfall, as Starbuck must lead this ramshackle unit into a battle that will prove to be the bloodiest of the Civil War.