Throughout the wars undertaken by Frederick the Great, probably his greatest resource was his infantry. It is a mark of the king"s determination that despite wars which almost destroyed both Prussia and its army (such as the Seven Years" War), he was able to maintain its numbers - even if the quality declined as the attritional campaigns took their toll. Philip Haythornthwaite examines the uniforms, tactics and organisation of Frederick"s infantry in detail - a fighting force that contested battles such as Mollwitz, Hohenfriedberg, Kesselsdorf, Liegnitz, Burkersdorf and the siege of Prague.