Abstract: A pack stove comprises a rectangular stove body formed by upper and lower stove portions each having a flat rectangular base and three upstanding side walls. The sidewalls of the upper stove portion have a plurality of tabs on the inner surface each defining a slot with the inner surface of the sidewall so that the upper edges of the sidewalls of the lower portion are seated within the slots to hold the stove portion apart. A front plate carries the loading door and a controlled air inlet and is attached to fill the open fourth side of the stove container by flanges around the periphery of the front portion. The legs of the stove are seated within sleeve members welded into the interior of the underside. The stove can be collapsed into one or two separate containers for transporting equipment. The stove construction is rugged and resistance to damage in vigorous handling.