clout waxed and waned but he long preceded the Bush administration. He was supported by ADM Art Cebrowski (LINK) -- who also preceded Rumsfeld. Your link didn't work for me but since it's in the New Yorker, it's likely to be superficial and incorrect. You might want to Google around on Cebrowski, Marshall and the much maligned and much misunderstood 'transformation.' It isn't nearly as simple as the media portrays it.

IMO Marshall had, like most people, some good ideas and some not so good. So did Cebrowski. So did Rumsfeld. The ideas of all of them had little real bearing on attacking Iraq and the planning that went with that.