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 Panzer Army 1 included the III, XIV and XLVIII Army Corps (mot.) with five panzer divisions and four motorized divisions (two of them SS) equipped with 799 tanks. Panzer Group 1 served on the southern sector of the Eastern Front against the Red Army and was involved the Battle of Brody which involved as many as 3,000 Red Army tanks. The units of the Group closed the encirclement around the Soviet armies near Uman and near Kiev. After the fall of Kiev Panzer Group 1 was enlarged to the 1st Panzer Army (on October 6, 1941) with Kleist still in command. The