Here's a version from a Canadian book, Songs from the Front and Rear: Canadian Servicemen's Songs from the Second World War, by Anthony Hopkins 1979). Note the alternate chorus, and this quote from Hopkins:

The alternate chorus is the closest I was able to come to a rumoured "sophisticated" version of "The Quarter Master's Stores." The always present rumour or belief among troops, particularly among recruits in large camps, is that "they" are putting saltpetre or some other chemical such as nitrate in the food secretly in order to diminish a man's sexual drive.

...the same rumor was endemic in the Catholic seminary I attended.
-Joe Offer-

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The Quarter Master's Stores

There were rats, rats, big as alley cats,
In the stores, in the stores,
There were rats, rats, big as alley cats,
In the Quarter Master's stores.
CHORUS
My eyes are dim, I cannot see,
I have not brought my specs with me,
I have not brought my specs with me.

ALTERNATE CHORUS
My cock is limp, I cannot fuck
The nitrate it has changed my luck.
The nitrate it has changed my luck.

There was beer, beer, to bring us all good cheer,
In the stores, in the stores,
There was beer, beer, to bring us all good cheer,
In the Quarter Master's stores.
CHORUS

There was cheese, cheese, rotting, stinking cheese,
In the stores, in the stores.
There was cheese, cheese, rotten stinking cheese,
In the Quarter Master's stores.
CHORUS

There was bread, bread, heavy as lumps of lead,
There was whiskey, whiskey, the stuff that makes you frisky,
There were socks, socks, filthy, smelly socks,
There were tents, tents, full of holes and rents,
There was rice, rice, full of bugs and lice,
There were flies, flies, eating all the pies,

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Teresa, I'd agree that Songs from the Front and Rear has a tune that's much closer to the chorus of "Power in the Blood."

Click to play

I guess it is the "Power in the Blood" tune that I know. I don't know where the Digital Tradition tune comes from.