The British Army No2 Cooker was a pressurised petrol fuelled portable stove for cooking rations in the field. It was a small square cooker with a single burner and although opinions differed on the stove itself (some loved it for its speed of heating up rations whilst others argued it was a bomb waiting to go off), all agreed that the accompanying stainless steel cooking pan was excellent. The dixie came in two parts, a large lower cooking pot and a frying pan that doubled as a lid:The lower pan was square in shape and about six inches deep making it ideal to throw a stew in, or to place cans in boiling water to heat them through:A wire handle is fitted that can be lifted up to allow the pan to be carried safely:Note the metal loops on the outside. These are designed to allow a leather strap to be passed around the two parts of the pan set to hold them together when not in use. The lid is far shallower and has two wire wrap around handles:These can be pulled out and allow the lid to be used as a small frying pan:This lid is /|\ marked and dated 1983:These cookers and the associated pan were common issue items in small armoured vehicles such as the Ferret armoured car and a tasty hot meal could be quickly prepared for the crew in the single pot, or a fried breakfast made on the lid.

One glowing review comes from a civilian who used the pans for camping:

A great pan set! Had mine 7 years now, first used with my No.2 Mk2.
Be aware that because its pressed stainless, occasionally with high-heat use it may warp/twist slightly, tilting the pan. Not an issue when you are used to it and not all pans do it! It returns to normal when it cools down.
The pan-handles are usually tinned/coated mild steel so a scrub and a wipe of light oil when/if they get a little rusty.
The pot is a great, useful size for boiling water, making soup and general cooking. It doesn’t warp, its thick enough not to cause heat spots and the handle/bail is of a cute design so that its easily held in the horizontal position (stops handle getting red-hot from flames).

The design dates back to before the Second World War and can be seen here in a page from a wartime manual on the No2 Petrol Cooker: