According to historian John Coski, Miles' design was inspired by one of the many "secessionist flags" flown at the South Carolina secession convention in Charleston of December 1860. That flag was a blue St George's Cross (an upright or Latin cross) on a red field, with 15 white stars on the cross, representing the slaveholding states, and, on the red field, palmetto and crescent symbols. Miles received a variety of feedback on this design, including a critique from Charles Moise, a self-described "Southerner of Jewish persuasion". Moise liked the design, but asked that "the symbol of a particular religion not be made the symbol of the nation". Taking this into account, Miles changed his flag, removing the palmetto and crescent, and substituting a heraldic saltire ("X") for the upright one.