Interesting history there DWalker. I'm sure I will do another amazon again so I will keep all the advice in mind. The missing breast does sound a little gruesome but I think it'd be an interesting attribute. Thanks for the reference!
If you are going for the Amazonians as described by the Greeks were from Asia Minor (most probably near modern-day Turkey), and had arms and armor not too dissimilar from the Greeks and Trojans. On a more gruesome note, they supposedly removed one breast to make shooting bows and throwing spears easier.