Former President Donald Trump on Wednesday attacked a retired four-star general with a decorated career in the American military. In a post on his Truth Social page, Trump lashed out at Ret. Gen. Mark Milley, who served as Trump’s own chairman of the Joint Chiefs of Staff during his first term. “Mark Milley is a loser who shamed us in Afghanistan and elsewhere!” Trump wrote. The timing of Trump’s outburst is odd given that Milley this week delivered testimony to Congress that reflected poorly on President Joe Biden’s administration, which he said waited far too long to evacuate American person…