They are not your images and you have not purchased the rights to use them, so if you do use them and you are caught you will get in trouble.
There are many people who are ignorant to usage laws and/or just don't care. Should they get caught, they will get into trouble.
There is a grave difference between supporting the war effort and those in uniform. If you do not stand behind our troops, feel free to stand in front of them.
Also, it has been 147+ days since I have seen my DH, so don't expect me to be all rainbows and sunshine when you are being stupid. Oh, let us not forget the glitter.