Tiger I nickname "Tiger" by Ferdinand Porsche, and the Roman numeral was added after the later Tiger II entered production. The initial designation was "Panzerkampfwagen VI Ausführung H" (‘‘"Panzer VI version H"’’, abbreviated "PzKpfw VI Ausf. H") where 'H' denoted Henschel as the designer/manufacturer. It was classified with ordnance inventory designation "SdKfz 182". The tank was later re-designated as "PzKpfw VI Ausf. E" in March 1943, with ordnance inventory designation "SdKfz 181". Today, only seven Tiger I tanks survive in museums and private collections worldwide. The Tiger 131 at the UK's Tank Museum, which was captured during the North Africa Campaign, is
1st SS Panzer Division Leibstandarte SS Adolf Hitler of 1942 refitting as a "panzergrenadier" division. Thanks to the efforts of "Reichsführer-SS" Heinrich Himmler, along with SS-"Obergruppenführer" Paul Hausser, the SS Panzer Corps commander, the three "SS Panzergrenadier" divisions (LSSAH), "Das Reich" and "Totenkopf" were to be formed with a full regiment of tanks rather than only a Battalion. This meant that the "SS Panzergrenadier" divisions were full-strength Panzer divisions in all but name. The division also received nine Tiger 1 tanks, and these were formed into the 13th ("schwere") Company/1st "SS Panzer Regiment". The collapse of the front around Stalingrad and the encirclement of the German Sixth Army