Quite agree. The main ingredients in making verbal descriptions relevant to maps (either provided in the same volume, or taken from a relevant atlas) are:
if you mention a name in the text, show it on the map, or at least link it to a recognisable spot shewn on the map.
try to pick a map with details limited so as to aid rapid understanding of the salient parts of the text i.e. remove useless clutter
when saying `N advanced. . `; `W fell back . . ` always give the compass direction, or relate it to a known spot or feature such as a river, mountain, coastline
always give the day and month - and year if clarity demands it.
limit battle descriptions to the significant bits, unless a lot of detail is expected.
when referring to flanks, include compass points.
once you`ve written a text, put it away for a week, then take it out and read it critically again; it`s amazing how many potential improvements and shortenings you will discover.