My most memorable meal in uniform was in about 1968 on exercise in Germany. We had a covert role which meant we had to carry a weeks rations on us, ie rice and nuts, not even curry powder as the smell could give us away. At ENDEX we were starving and exhausted, moved into a barn and the German farmer's wife sold us one of her chickens which she pot roasted in gravy with potatoes and garlic. Still drool when I think of it.
My father always said his most memorable meal in uniform, sort of, was in Burma in 1944 when they casseroled a Japanese guard's dog in a bucket. Saved his life and he has had a soft spot for Labradors ever since.