USA WW1 Navy poster campaigns

Propaganda is when the government takes information and displays it throughan exaggerated viewpoint in order to garner backing from their citizens.
Dictionary.com defines propaganda as "information, ideas, or rumors deliberately spread widely to help orharm a person, group, movement, institution, nation, etc."
The image on left shows the United States displaying a navy shipman smiling before he leaves to go on the ship as you can tell by his luggage. The government is showing the navy as a kind of vacation and provides an overall happy image with all the warm colors being used in the background. The artist is trying to show that the navy is not a stressful thing, but a place to be happy and to get a new leash on life. The artist is targeting an audience of young men probably late teens to launch themselves into a career. The second image  shows men firing large anti-aircraft like guns with one firing in the background, possibly trying to appeal to the younger crown with the coolness of these guns, but with this image it is not the image itself that is advertising but the text. The Learn...Guns section shows how theyr'e trying to appeal to people and to let people enjoy themselves by working with the"big guns". The artist much like the last one is trying to appeal to they younger crowd or even the poor who need to learn a trade and the artist shows how they can start/further their career by helping the navy. In the last image, this one is the first to use American patriotism to their advantage, showing an angel soaring through the sky holding an American flag as if to say even if they die in the navy, they live on through America. Showing a Navy sailor advertising to an average man about helping America. The artist is trying to get people to make history by joining the navy and adhering to the patriotic side of people. Unlike the other two, this poster is not targeting a specific audience, just any able-bodied American man. 
While I may not like that the federal government used/uses tax dollars to promote propaganda, I would much rather them do this than to take a chance in living in tyranny. During WW1 it was neccesary for the government to make these posters to sway the opinion about the war and try to get men to join the war effort.