The Sherman tank was most numerous for the United States proving to be reliable and mobile. Despite being outclassed by German mediums and heavy, Sherman was cheaper to produce and available in greater numbers. Thousands were distributed, stressing reliability, ease of production, durability, standardization of parts and ammunition in a limited number of variants, along with moderate size and weight. These factors, combined with Sherman's then-superior armament, outclassed other's and Sherman went on to be produced in large numbers, spearheaded by the Western alliance. The relative ease of production allowed huge numbers of Sherman to be manufactured, and significant investment allowed returning service. These factors combined to give the American numerical superiority. Despite its deficiencies to other superior German as well as other American tanks, Sherman won the war through its adaptation to modernization techniques.