I hate to ruin it for you, but if you lived during World War II, a JANGO was something very, very different. The Second World War was an all out effort from virtually everyone and even the daughters of Army and Navy officers pitched in. The Junior Army Navy Girls Organization and its members called JANGOs served as nurses on the home front. Their duties as a JANGO included caring for newborn babies on base.
So next time you see an amazing Jango Fett costumer or watch Attack of the Clones, don't forget the original JANGOs serving in World War II.