“peacetime”

scientific articles

scientific articles Friday, June 7, 2013 Warplanes Airplanes were first used in warfare during World War I (1914-1918). They have been vital elements of armed combat ever since. Warplanes range from fast, nimble, jet-powered fighters to battlefield helicopters and tankers for in-flight refueling. Between them, they find and destroy enemy aircraft and targets on the ground. Warplanes also help transport troops and equipment to and from the battlefield. In peacetime, military transport aircraft