Some advertising schemes were complex and deep, others were not.  The Meara Brothers was a clothing store.  The opening line got them reading, "War Time Xmas Advice", but then nothing afterwards even remotely involved the war.  Essentially the only difference between ads such as this and pre-war was the headline.

Sometimes A Cigar is Just A Cigar

Not every advertising campaign was clever or well thought out.  There were some who just seemed to put in the bare minimum for effort.  This ad for Meara Bros. is an example.  There was an estimated 800 daily and weekly periodicals published who willingly gave up their own ad space for CPI use, not to mention the figures show about three times as much was given in donations by those same publishers and printers. 

Which brings us back to ads such as this.  With all the press willfully given, why would small business be so blatant as to put in a seemingly shameless for-profit plug using the war as a headline?  The answer is quite simple.  Many of their competitors were doing it.  As more and more ads featured war propaganda, the pressure to show a pro-war face grew.  Industry related to the war obviously made sense, but there is a strong showing from fashion and clothing stores.  The reason is that the war was fashionable.  It was seen as out of touch to not be pro war in America after war was declared.