drafting doctors

I saw this story which described "a little-known contingency plan for drafting physicians." When I first read that I thought, "Duh, haven't you ever seen MASH?? Of course they can draft doctors." Then I read the article more closely and saw that this is a newer plan that was authorized in 1987. The key part is that they can draft doctors and other medical types without reinstating a general draft. Note especially this line: "though a general draft is not likely to occur, a physician draft is 'the most likely conscription into the military in the near future.'"