Pilots had to don particular garments when flying an plane in World War I because they flew higher, in which the air is cold. The pilots' apparel saved them heat and guarded them with the wind and cold.Tahun 1917, serangkaian pemberontakan di tubuh Advert Prancis berujung pada eksekusi lusinan tentara dan penahanan sejumlah besar tentara lainnya.Al