In the early 18th century the British did use a number and colonels name scheme, for some regiments. Others didn't, they had a unique name and a number. Look up an order of battle for the Battle of Culloden and you'll see these two methods used side by side.
Your hopes are in vain. Go to the screenshot thread and gaze upon a Spainish army that has 120 man infantry units, 18 man artillery units, and 60 man cavalry/skirmisher units.
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