In the UK and other European countries the same item had a long life in the military - a sealed pattern tool or piece of kit may have been issued through most of the 20th century, made by a number of different maufacturers - in my own area, billhooks, the same model is often found with date stamps 1914 to 1918 and 1939 to 1945, plus occasionally earlier or later - it was only discontinued in the 1960's, when it was replaced by a machete/jungle knife. The same pattern barbed wire cutters are found in the UK stamped for both world wars. so I guess in the USA they would well have been found in both...
