There's something about the death of a dog that just strikes a chord with nearly everyone. Perhaps it has something to do with the dog's innocence and unyielding loyalty, but whatever it is, I seem to linger on images like this every single time. While iwastesomuchtime.com (I know, but it's addicting) typically displays funny internet memes, statuses, and comics, sometimes a meaningful image like this appears and makes me stop for a minute. Sometimes that's all rhetors really want from their audience: a moment of thought and appreciation towards the topic displayed.
Dogs have been used in warfare since the time of the Ancient Egyptians, and have been a valuable part of the military since. They are commonly used for scout duty, to warn of enemy attacks, find the injured, and to carry supplies and messages during combat. In fact, some sources estimate that each military dog saves about 150 lives in combat. And yet, just like the thousands of other soldiers fighting for our freedom and security in a far off nation, we as Americans tend to forget their sacrifice, and need to be reminded of it every so often.
Just like in O'Brien's How To Tell A True War Story, I think the death of animals is used to draw emotion from the audience, especially because the death of soldiers unfortunately faces apathy from the general public in today's world. The composition of this photo draws the audience down the soldier's arm to the sweet dog below, then pulls our attention to the memorial that the subjects are looking at as well. Here we see a memorial for 25 dogs that have given their lives, perhaps unknowingly so, for the noble pursuit of freedom. The man and dog staring at the memorial are paying their respects, (even if the dog doesn't understand the significance of the memorial) and the man is taking a moment to show his best friend his love. All this emotion makes the audience feel emotionally connected to the dog pictured and the other dogs that have given their lives, because the death of something so pure can be felt by all. This makes the audience aware and grateful for the jobs of dogs in the military that perform jobs humans are incapable of doing.
This image is meant to catch the audience attention and maintain it long enough for them to appreciate the value of dogs in the military and all that they do as man's loyal best friend. The image captures the audience's attention, raises awareness about the sacrifice of others, and creates an emotional bond strong enough that the image remains in the audience's head long after they have scrolled past.