You do know that he was a hero in three wars, right? Next you’ll bring up the Bonus Army incident.
A good Sample of MacArthur’s attitude to the world is taken from his early attempt to win himself a Congressional Medal of Honour. As a minor liaison in one of the repeated American interventions in Central American affairs - at Vera Cruz - he recommended himself for the medal on the basis of an incredible sounding adventure he had undertaken supposedly for useful military purpose (and without orders or permission). The mythology of this rampage through enemy territory on a hand pumped rail cars, while single-handedly shooting it out and emerging victorious from several conflicts, has been uncritically accepted by far too many people. Historian Jack Galloway, writing a book about the relationship between McArthur and his senior Australian commander General Blamey during the Second World War (The Odd Couple: Blamey and MacArthur at War), employed professional athletes to try and attempt a similar feat with a hand cart to the one MacArthur claimed. They found the whole thing impossible, and concluded that the story was at least partially, if not completely, fantasy.
MacArthur posed with his Great War troops very efficiently, and apparently led them with actual elan. The very flamboyant troop leader apparently inspired his men, and achieved fairly significant results. They were not significant enough to impress General Pershing, who refused to add his name to the list of those to be promoted Brigadier, and was seemingly appalled and disgusted when MacArthur’s mother apparently managed to influence the promotion anyway and wrote him a thankyou letter for the supposed recommendation. (He was only given a brigade the day before the Armistice, and ran it for a mere 10 days after fighting ceased.)