Hardly what you had in mind, I'm sure ... but, during Canada's Northwest Rebellion of 1885, the Battle of Batoche (May 9-12) - which was mostly a stalemated series of skirmishes, with the Canadian Militia forces probing the defences of the entrenched Metis ("halfbreed") defenders and some Indian allies - ended with a spontaneous bayonet charge begun by the Midland Battalion (from Ontario) while the overley cautious expedition leader, General Middleton, was having lunch on the last day.
The charge quickly over-ran the defenders, who were getting low on ammunition anyway ...
Here are a couple of details from engravings of the bayonet charge published in The Canadian Pictorial and Illustrated War News number of May 30, 1885. Not necessarily "historically accurate", of course ...
From the typically florid caption:
"THE BAYONET CHARGE AT BATOCHE ... the heaviest charge was made by the Midland Battalion, who rushed forward with a cheer which was taken up and re-echoed by the whole line with such force and vigor that the enemy became panic-stricken."