They also distribute books for other publishing companies and market their products to enthusiasts, hobbyists, students, instructors, and researchers of military history, as well as members of the armed forces and military organizations.

Casemate began distributing books in North America for publishers, specializing in military history.

In July 2007, Casemate supported a management buyout of the Greenhill Books/Chatham Publishing distribution operation and sales team from Lionel Leventhal Ltd and set up a new company, Casemate UK Ltd.[4][5] As a result, Casemate UK became responsible for the sales, marketing, and distribution of a number of military history and art book publishers.

In December 2011, Casemate UK's parent company, Casemate Publishers Ltd, bought leading archaeology publisher and bookseller Oxbow Books,[6] together with its US operation, The David Brown Book Company, from its founder, David Brown, on his retirement.

In 2019 Casemate acquired the distribution business of US-based Dufour Editions,[9] making Casemate IPM the largest distributor of books for Scottish, Irish, and Welsh publishers in the United States.