Talk:Redan
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illustration reversed fleche and redan
[edit]I suppressed the display of an illustration:

As the text states, and as articles outside of Wikipedia (https://www.miniatures.de/fleche.html, https://encyclopedia2.thefreedictionary.com/Redan) confirm, it doesn't make sense for the taller "V" to be labelled "fleche".
One article says
Fleche (French flèche, arrow), is the name given to a small redan, detached and isolated, whose faces are not more than 45 to 60 feet, f (fig. 18), the opening of the flanked angle varies from 60 to 80 degrees.
the other says
Flèches, which were sometimes permanent, were a type of redan with two faces, each 20–30 m long, that formed an obtuse angle
So, the smaller structure should be identified as the fleche. I am less sure whether it is wrong to show a fleche with an acute angle, but the angle in the illistration is clearly less than 60 degrees.