3 hours ago, JoNorvelleWalker said:
As long as you have an APO.
Or a toasting fork and a flame. I very much doubt that any soldiers in the trenches in WW1 had ever even seen a pop-up toaster, largely because they hadn't yet been invented!
My mother still has her toasting fork and I have happy memories of making toast over the fire in the 1950s. She doesn't have an open fire now!