Lumberjack it usually refers to a logger from an earlier time before the advent of chainsaws, feller-bunchers and other modern logging equipment. Other terms for the occupation include woodcutter, shanty boy and the colloquial term woodhick (Pennsylvania, US). A logger employed in driving logs down a river was known locally in northern North America as a river pig, catty-man, river hog, or river rat. The term lumberjill has been known for a woman who does this work; for example, in Britain during World War II. In Australia, the occupation is referred to as timber cutter or cool cutters. Lumberjacks worked in
Technology during World War II Air power was a major concern of Germany and Britain between the wars. Trade in aircraft engines continued, with Britain selling hundreds of its best to German firms - which used them in a first generation of aircraft, and then improved on them much for use in German aircraft. These new inventions lead the way to major success for the Germans in World War II. Germany had always been and has continued to be in the forefront of internal combustion engine development. Göttingen was the world center of aerodynamics and fluid dynamics in general, at least up to the time