Pass in the Pindus Mountains, the commander of the Greek Epirus army surrendered the entire force to Dietrich. British Commonwealth troops were now the only Allied forces remaining in Greece, and they were falling back across the Corinth Canal to the Peloponnesos. By 26 April the LSSAH had reached the Gulf of Patras, and in an effort to cut off the retreating British Commonwealth forces, Dietrich ordered that his regiment cross the Gulf and secure the town of Patras in the Peloponnesos. Since no transport vessels were available, the LSSAH commandeered fishing boats and successfully completed the crossing, but were forced to leave much of their heavy equipment behind. By 30 April the last British Commonwealth troops had either been captured or escaped. The LSSAH occupied a position of honor in the victory parade through Athens. After Operation Marita, the LSSAH was ordered north to join the forces of Army Group South massing for the launch of Operation Barbarossa. Invasion of the Soviet Union Following LSSAH's outstanding performance during Marita, Himmler ordered that it should be upgraded to divisional status. The regiment, already the size of a reinforced brigade, was to be given motorized transport and redesignated "SS-Division (mot.) Leibstandarte SS Adolf Hitler". It was moved to Czechoslovakia in mid May for reorganization until being ordered to assemble in Poland for Operation Barbarossa, as part of Gerd von Rundstedt's Army Group South. There was not enough time to deliver all its equipment and refit it to full divisional status before the launch of the invasion of the Soviet Union, so the new "division" remained the size of a reinforced brigade, even though its expansion and development was of concern at the very highest ranks of command. Franz Halder, chief of the OKH General Staff noted on 20 June that "SS 'Adolf Hitler' will not be ready in time. Tracked components leave on 22 June, others not before 25 June," then more hopefully the next day; "Materiel position of SS 'Adolf Hitler' has improved, Div. may yet get ready in time." Despite Halder's hopes, LSSAH was held in reserve attached to XIV Panzer Corps as part of Generalfeldmarschall Ewald von Kleist's 1st Panzer Group during the opening stages of the attack. Through July it was attached to III Panzer Corps before finishing August as part of XLVIII Panzer Corps. During this time, the LSSAH was involved in the Battle of Uman