You forgot the Vietnam War. Some disagreement who "started it", but LBJ has to take the most blame, since he brought in massive troops, & conned Congresss into an infamous "resolution" that sounded like a brief police action, but ended up a full scale big war within months, drafting all our young men, and committing massive troops for about 10 awful years.

Thing is,  we had the Colin "Powell doctrine" afterwards, committing the least troups needed in the shortest time, with a "well defined mission & exit strategy". This doctrine was followed by Reagan, Bush#1, and Clinton. GWB threw the Powell doctrine into the trash, and changed to a Neocon policy, advocating invasion of middle East countries,for oil & strategic dominance, & comtinual, endless war, so the R Party could dominate in a new American Century. We all know how that ended, with disasters like a Great Global Recession. Obama restored the primacy of peace & diplomacy, & military war as a Powell doctrine style last option.