out the archers' names and the archers would (in turn) call out their scores as they pick up their arrows. The scores must be called in descending order as with target archery. Crossbow archery (IAU rules internationally) The International Crossbow-shooting Union (Internationale Armbrustschutzen Union – IAU) was founded in Landshut, Germany, on June 24, 1956, as the world governing body for crossbow target shooting. The IAU supervises World, Continental and International crossbow shooting championships in 3 disciplines; Match-crossbow, Match-crossbow and Field-crossbow archery. IAU World Championships take place every two years with Continental Championships on intervening years. Other International and IAU-Cup events take place annually. Field-crossbow archery was first adopted by the IAU during their General Assembly at Frütigen, Switzerland in 1977. Since then the sport has become the most popular, in terms of worldwide activity, of the IAU's three target crossbow disciplines. A feature of this sport is that many crossbow archers make their own equipment. By following the detailed guidelines issued by the IAU's Technical Committee it is possible to construct a field crossbow from locally available archery materials and target shooting accessories. The IAU's Field regulations call for the wearing of light-weight sports clothing, thereby eliminating the need for specialized (and costly) shooting clothing. Shooting takes place on open sports fields or in sports halls using portable archery target buttresses, once again avoiding the need for the expense of permanent shooting ranges (subject to IAU and local safety regulations being met). Crossbow archers shoot from the standing position and they must draw the bow string by hand without mechanical assistance. At outdoor competitions Bolts (arrows) are shot in "ends" (series) of three at multi-coloured 10-zone archery target faces. A time limit of three minutes is allowed per three shots. After a sound signal from the official in charge of shooting, all competitors walk forward together to score and collect their bolts from the targets. This sequence is repeated until the completion of the competition 'round'. Equipment – Field-crossbows are designed to specifications laid-down by the International Crossbow-shooting Union (IAU). These rules limit the power, weight and physical dimensions of equipment for use in archery-style competition. Other restrictions include the use of mechanical triggers and open sights only. The bowstring has to be drawn by hand without the use of mechanical assistance. The materials used in construction include laminated hardwoods, aluminium alloy and composites. The prod, or bow, is