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Pictures and literary references involving transverse flutes become rare for about 70 years after the second decade of the 15th century. Most of the references that do exist might refer to duct flutes.						At the end of the 15th century the military flute becomes common again, particularly in the hands of Swiss mercenary troops and in combination with side drums. The flute and drum combinations quickly spread to Italy, France, the German lands, Spain, and Sweden together with new Swiss infantry techniques. Military flute page
								A woodcut from Leonhard Fronsperger's manual of military discipline, Fünff Bücher. Von Kriegss Regiment und Ordnung (Frankfurt, 1555), shows a military transverse flute player from behind, so that we can see his flute case slung over his shoulder to carry several different-sized instruments.
Medieval flute page						Military flute page