I will cut right to the chase.

It is none of the business of any antiwar individual within the United States to take it upon themself to be critic and judge for or against any American soldier who has of his own free will joined the military service of the United States government and has been commissioned by that military to engage in potentially-lethal battle in Iraq, Afghanistan, or anywhere else on the planet.
It is also none of the business of anyone in the civilian population to direct the operations of anyone of the military engaged in military operations pertaining to any overseas conflict.
It is, however, acceptable for pluralistic civilian-voter taxpayers to dutifully elect into office and then respectfully petition certain government agents who direct and control the United State military and their domestic and international affairs.

Involved with the last statement made above is antiwar citizen concern that elected and appointed government officials (such as the President, Congressmen, legislators, judiciary, and State Deparment people who let foreign terrorists into America) and others in charge of the military must responsibly not engage in needless aggression and irritating harassment against established and orderly sovereign foreign governments who are allied with and not hostile against the economic and reputational wellbeing of Americans in general.

Case in point relating to Iraq, Iran, and Afghanistan is the decision of the Commander-in-Chief to direct American military to protect ally Israel against Al Qaeda and associates, which terrorists (and not "terrorism" per se) who are not only not sovereign foreign governments but also are hostile against everyone of the United States who is not antisemitically against both Christians and Jews not only in Israel but anywhere globally.

This author is a baby boomer, born in the late 40s. I was at the university at the time of the Viet Nam military excursion some called a "war." If my memory serves me correctly, there was a military draft of young men at the time, but I had a student deferment because of my educational status, and my lottery number was 324 (which was too high for me to be called into service into Viet Nam). I did not support the Kent state antiwar protestors who refused to disperse by orders of the National Guard and were gunned down by them, not because of pseudo-martydom of those gunned down pertaining to their antiwar fanaticism but because they disobeyed a direct police order to disperse and thus despised government authority contrary to the directives of the opening verses of Romans chapter 13 in the New Testament of the Holy Bible.

I was fortunate that I did not have to go into jungle combat, because I am no Rambo physically. My brother-in-law was not so lucky, being that he tripped a booby-trapped grenade in the jungle and lost a leg because of it. I therefore am grateful to whichever U.S. president terminated the involuntary military draft and restored voluntary military conscription for young men.

At the present time, my dad concurred that there is now no involuntary military draft but instead merely a volunteer army, navy, etc. That is of course why we see and hear so many pro-military-service commericials on TV and radio. And even though war has (to my knowledge) not been congressional declared officially against any nation on God's green Earth, occasionally lethal military conflict is yet going on and casualties (though not the rate of casualties) are increasing every day in terms of the start of whenever one would want to start counting.

SHOULD there continue to be a volunteer military? Here is what Judges chapter 7:2-11 in the Old Testament states:

2 The LORD said to Gideon, "The people with you are too many for me to give the Midianites into their hand, lest Israel vaunt themselves against me, saying, 'My own hand has delivered me.'
3 Now therefore proclaim in the ears of the people, saying, 'Whoever is fearful and trembling, let him return home.'" And Gideon tested them; twenty-two thousand returned, and ten thousand remained.
4 And the LORD said to Gideon, "The people are still too many; take them down to the water and I will test them for you there; and he of whom I say to you, 'This man shall go with you,' shall go with you; and any of whom I say to you, 'This man shall not go with you,' shall not go."
5 So he brought the people down to the water; and the LORD said to Gideon, "Every one that laps the water with his tongue, as a dog laps, you shall set by himself; likewise every one that kneels down to drink."
6 And the number of those that lapped, putting their hands to their mouths, was three hundred men; but all the rest of the people knelt down to drink water.
7 And the LORD said to Gideon, "With the three hundred men that lapped I will deliver you, and give the Midianites into your hand; and let all the others go every man to his home."
8 So he took the jars of the people from their hands, and their trumpets; and he sent all the rest of Israel every man to his tent, but retained the three hundred men; and the camp of Midian was below him in the valley.
9 That same night the LORD said to him, "Arise, go down against the camp; for I have given it into your hand.
10 But if you fear to go down, go down to the camp with Purah your servant;
11 and you shall hear what they say, and afterward your hands shall be strengthened to go down against the camp."

Getting back to anti-military anti-war civilian protestors (whether fathers or mothers of militarily-volunteering sons, professors of students now serving with the military, and/or traitorous anti-American subversives in general), any young man of legal adult age who voluntarily decides and chooses to place himself under military authority and command is under the command of the military he is then aligned with - not that of his parents nor professors nor treasonous subversives infesting American territories. Therefore, it is totally out of the jurisdiction of parents, neighbors, professors, and subversives to decide what he and others of his military partnership should or should not do militarily, where they should or should not be militarily, and how they should or should not do whatever they do military.

As always, any injustice having existed or is now existing can be remedied by prayer to the Almighty King of kings - Jesus Christ - who has ultimate and overriding omnipotent jurisdiction and divine authority over all military and civilian individuals regarding or concerning whatever they want to say and do, wherever they do it, and whenever they do it.