Summary: Army Instructional film intended to show that the infantry are the most important part of any army, and, with reference to quotes from Field Marshal Montgomery and General Wavell, and historic examples from classical times to El Alamein and D-day, that it always has been so. Scenes of infantry fighting in Normandy, Burma and Korea are used to emphasise the point that all other arms exist to support the infantry. The importance of training and discipline is discussed, infantry weapons listed and described briefly, and support units, such as signallers and engineers, are shown advancing with infantry units. Considerable attention is given to 'spirit'; the sense of pride and belonging considered essential to a regiment's effectiveness and based heavily on its history and tradition. A range of cap badges scroll past and the significance of some of the symbology is explained. The 1st Battalion of the King's Own Yorkshire Light Infantry are shown parading in the German town of Minden on the anniversary of the 1759 battle on the 1st August 1946.