France has used many military aircraft both in the French Air and Space Force, and other branches of its armed forces. Multiple aircraft were designed and built in France, but many aircraft from elsewhere, or part of joint ventures have been used as well. Lighter-than-air aircraft such as dirigibles and balloons found use starting in the 19th century used mainly for observation. The advent of World War I saw an explosion in the number France's aircraft, though development slowed after. While having many promising designs in development in the 1930s, government wrangling delayed development enough there was little available at the out break of World War II. The armistice in 1940 marked a low point, with Vichy France being allowed only reduced numbers and development halting. Many French aircraft were captured and used by Nazi Germany and its allies. Some aircraft that did escape served with the Allies or Free French forces, who also used many other types of allied aircraft. The cold-war saw the continued use of many other Western aircraft, mainly from the U.S., during a period of rebuilding of the aviation industry and under threat of war with the Soviet Union. Many new types woul service including the very successful Mirage series or the latest design, the Rafale.