Back in June 2012, as I was completing my Ligny June 16, 1815 scenario for the local HMGS-PSW convention that summer, I came across several documents and information on this small battle the day before Ligny. Making a mental note and almost two years later, I finally wrote up a possible scenario for this action or small battle.
From my blog write up page/scenario
"The rearguard battle fought at Gilly, on June 15, 1815, was the final evening combat between Prussian 2nd Brigade and the advancing French Armee du Nord. During the morning and warm afternoon hours of June 15th, the Prussian 1st and 2nd Brigades, of von Zieten's Prussian 1st Korps, had been fighting, retiring, and reporting the steady advance of the French since their early morning crossing of the French border. Elements of the 2nd Brigade under von Pirch II and 1st West Prussian dragoons fought several skirmish combats; at Montigny-le-Tilleul, Montigny (the Fus/2nd Westphalian landwehr battalion was ridden down and scattered), Ham-sur-Heure, Marchienne-au-Pont and the Charleroi Sambre river crossing before the majority of the Prussian 2nd brigade united at Gilly during the late afternoon.
Pushing aside the weak Prussian outposts along the way, the French Armee du Nord crossed the Sambre river at several points during the afternoon of June 15th. Marchienne-au-Port and Charleroi were the main crossing points but early evening the French started to cross at Chatelet. The leading French divisions, after crossing the Sambre river near Charleroi, split into two general directions. Up the Brussels road towards Gosselies and Frasnes, engaging first the defenders of 1st Prussian brigade till late afternoon who withdrew towards Fleurus via Heppignies, and the other direction towards Gilly and distant Fleurus, meeting the deployed Prussian 2nd brigade under von Pirch II behind Gilly. This scenario covers the Gilly rearguard battle fought for several hours into the evening of June 15th
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More written on the blog page
Link to my blog post on this scenario:
link
Scenario notes:
link
M aka WR