the Dilbert comic strip character from Scott Adams (from the 1990's to present), was named for the character Dilbert Groundloop in WW2 Navy aviation training manuals. Those are related to the Army training films by Dr Suess, Chuck Jones, Mel Blanc, and Frank Capra and also the training manuals by Will Eisner

The WWII military was large enough to fight a two ocean war, and that meant men were conscripted into military service beginning in 1940, however, 50 percent of men reporting for induction were rejected for military service due to physical or mental deficiencies.

 After the nation was at war, standards for induction into the military were relaxed and rejection rates dropped to 29 percent for the duration.

Of those accepted for military service, 70 percent had dropped out of school, 500,000 had less than a fourth grade education, and 4.4 million had less than an eighth grade education. 

On the other end of the spectrum were the college graduates, who made up only three percent of the army’s ranks.

To educate young soldiers with minimal formal education on military subjects and to improve morale, a series of cartoons were created by the US War Department.

I covered all of the background info in the post on the training manuals that Will Eisner illustrated: https://justacarguy.blogspot.com/2018/04/will-eisner-originator-of-graphic-novel.html

Dr Suess (wrote) and Chuck Jones (illustrated) made animated cartoons about Pvt Snafu, who was voiced by Mel Blanc of course https://en.wikipedia.org/wiki/Private_Snafu and they were directed by Frank Capra
https://www.nationalww2museum.org/war/articles/private-snafu-cartoon-series

the Dr Suess ads http://justacarguy.blogspot.com/search/label/Dr%20Suess

 https://en.wikipedia.org/wiki/Dilbert_Groundloop  from https://en.wikipedia.org/wiki/Dilbert_%28character%29

page 55 and 130 of https://books.google.com/books?id=IObo37IFIXUC&pg=PA132#v=onepage&q&f=false