Much has been written about the use of tanks in battle. Little, however, has appeared about the gunnery systems that are at their core. This book describes and examines the main gun systems of medium and heavy tanks from first use in 1916 in World War I to those fielded in numbers to the end of World War II in 1945, including tanks of the interwar period. Specifically considered are guns of a caliber greater than 35 mm, which have been deployed in numbers greater than 100. The emphasis is on guns mounted in turrets on heavier tracked armored fighting vehicles (greater than 15 tonnes) which were considered tanks. There are, though, exceptions, in that the naval 6 pounder guns in First World War British tanks, as well as the 75 mm guns in French medium tanks of the same period (all turretless) are included. The treatment of gun systems includes sighting and fire control equipment, gun laying equipment, mounts and the array of munitions fired, as well as the actual gun, including its, barrel, cradle, breech, firing mechanism, sights and recoil system. Related to this are issues of gun handling (loading and unloading), ammunition design and rates of fire. Also examined are the maximum impulse and energy generated by firing some of the munitions available that must be absorbed by the gun recoil system.

William Andrews was born and raised during the forties and fifties on a mixed farm in Freetown, PEI. He left home young, shifted around a lot and tried a lot of things. He marched in regular peace time army, fished gill net on Lake Erie, sang gospel in Maritime penal institutions, carved wood in Japan and did a lot of labour type jobs in a lot of places. He was encouraged to write while at UPEI in 1970–71. He started writing in 1995. His first novel The Grand Change was chosen as one of Prince Edward Island's Library Fourteen Books, One Island reading campaign.

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