This text seeks to provide a comprehensive and systematic up-to-date treatment of liquid propellant gun technology. The book discusses early approaches to gun design, such as bulk-loaded configurations and the use of regeneratively injected bipropellants, through very recent developments in the field of large-calibre and electrothermal-chemical systems. In addition, hybrid and electrothermal propulsion systems are covered in the text, as are modern approaches to electric gun development such as electrothermal gun technology. This book is intended for professional engineers and scientists in the fields of gun propulsion, ballistics and combustion, and for physicists, chemists and students - undergraduate through postgraduates - interested in these fields. The main objective of the book is to describe, in depth, the results of various experimental and theoretical research from 1950 until the present in the field of liquid propellant propulsion. Even today, most of the information concerning liquid propellant gun research is still scattered among military, international and private files. One benefit of using this text is that the reader can find information, previously available only through many sources, synthesized in one book.