[Cannoneer No. 4]

When you're wounded and left on Afghanistan's plains,
And the women come out to cut up what remains,
Jest roll to your rifle and blow out your brains
An' go to your Gawd like a soldier.
Go, go, go like a soldier,
Go, go, go like a soldier,
Go, go, go like a soldier,
So-oldier of the Queen!

[Clive]

I am old enough that when I was a child the schoolmasters used this type of poetry as a way of teaching moral lessons.

But the headmaster emphasized the verse before the one that you quoted:

If your officer's dead and the sergeants look white,
Remember it's ruin to run from a fight:
So take open order, lie down, and sit tight,
And wait for supports like a soldier.