“Amazing how many Marines signed up based on the ‘snappy blue uniform’, that only the recruiters wore.”
Every Marine can wear the Dress Blue uniform when the situation or regulations call for it.
L
Times were different during WW2, especially at the start - only recruiters wore the blues as a duty uniform. If you read some of the autobiographies of WW2 Marines - many, many of them mention wanting to wear that uniform, and never seeing one again after they joined up.