United Shoe Machinery Corporation
United Shoe Machinery Corporation ( sometimes abbreviated USMC ) was a U . S . -based manufacturer of various industrial machinery , particularly for the shoe manufacturing industry ( so is the corporate name , ) which at one time monopolized the American shoe machinery business , and an important federal government's defense contractor during the World War I , Interbellum years , World War II and the Cold war era , which developed and manufactured various land and aircraft armaments , as well as components for the military hardware made by other manufacturers . 
<triplet> Interbellum years <subj> World War I <obj> follows