Nobody criticizes those who served. They just do their jobs and do them well. They are sent there by flawed leadership and that is where the criticism is targeted.
Here's your real war information.
Permanent War Offers Profits for the Ruling Class, Ashes for the Rest
"There is only one major domestic manufacturing profit-center for US capital: the military-industrial complex (the MIC). It is hardly a coincidence that the US spends more on weapons and the military than all of other countries in the world combined.
Three of the four principal profit centers are inter-related. The MIC produces handsome profits on its own. The MIC is necessary to protect the world-wide interests of the US energy production/consumption industry. The MIC is also necessary to protect the loci of US capital around the world, the so-called global economy. And now we come to the first reason why it is highly unlikely that President Obama would be able to bring the Permanent War to an end. The US political system as a whole could hardly sell Permanent War to the US people on the basis of its real "whys." So it has to create the necessity of Permanent War, known colloquially in the US as the "War on Terror." And what a nice state-of-being this so-called "War" (the equivalent in conventional military parlance would be something like, as a US General once said, a "War on Flanking Maneuvers") creates for the Permanent Warriors. There will always be terrorists, or potential terrorists, or (created, false flag terrorists, if needed), and the "War" itself creates even more of them. Thus, by its very nature, it can never end.
But further, the US political system, as least as it now constructed, will never let it end. The "Permanent War" Party is the GOP. They are the bought-and-paid representatives (along with certain Democrats to be sure) of the interests whose interests are served by Permanent War (as above). As is well-know, even though center and center-right Democrats don't want to admit it, the GOP controls the Congress, through its majority in the House of Representatives and the (un-constitutional, but that's another matter) super-majority rule in the Senate. With gerrymandering/re-districting and small-state dominance of the Senate, this is not going to change any time soon. (Certainly it will not change through any effort of the present Congressional Democratic Party, of which too many members are just as bought-and-paid-for by the Corporate Power as are the Republicans.) You just have to listen to the response of the McCains and the Grahams to know that to the limits of their power they will do everything they can to block Obama from ending the war (that is if he really wants to)."
"The USA spends more of Military Offense than the rest of the World combined."
Does that make any sense to you? It doesn't to me. War is good business, and business is good.