"No one would have doubted his ability to reign had he never been emperor"

This quote by Tacitus is referring to the Roman Emperor Galba, that was the initial emperor of the Year of the Four Emperors. Tacitus is indicating that Galba was a qualified leader, even before he became emperor. He was understood for his army prowess as well as his capability to lead, and also Tacitus is suggesting that had he not been emperor, nobody would have doubted his ability to rule. This quote is a testimony to Galba's management skills and also his ability to influence loyalty and respect from those around him. It likewise talks to the truth that he was a qualified leader even prior to he was given the title of emperor. Tacitus is applauding Galba for his leadership abilities and suggesting that he was a natural leader, also before he was offered the title of emperor.