In the quest for a more manageable receptacle, the Americans, joined by the British, based their design for a five-gallon can on captured German cans. Ironic respect was paid to the German original in the nicknames they adopted; the “blitz can”; and, more commonly, the “jerrycan.” But the Americans made an important innovation in the German design. The German troops had to use a funnel, which allowed dirt to enter the engines of their vehicles. The Americans added a built-in pouring spout, which kept the dirt out.