Montcalm and this brave youth together walked,
Between two armies they like brothers talked.
Then each one took his post, and did retire.
'Twas then this numerous host commenced to fire.

Well, no, it's not historical. The British took the French by surprise, by going up the hill in the early morning. There was no talk between Wolfe and Montcalm. And there was no horse!

I found it in "Singing Our History: Canada's Story in Song," by Edith Fowke. At least I think so.