Question: Which German Commander-in-Chief that used the Trasimene Line was nicknamed "Uncle Albert" 

Context paragraphs:
Eric I, Duke of Saxe-Lauenburg: Eric I of Saxe-Lauenburg (c.1280–1360) was a son of John I, Duke of Saxony, and Ingeborg Birgersdotter of Småland (*ca. 1253–30 June 1302*, Mölln), a daughter or grandchild of Birger jarl.  He ruled Saxony jointly with his uncle Albert II and his brothers Albert III and John II, first fostered by Albert II, until coming of age.  In 1296 Eric, his brothers and their uncle divided Saxony into Saxe-Wittenberg, ruled by Albert II, and Saxe-Lauenburg, jointly ruled by the brothers between 1296 and 1303 and thereafter partitioned among them.  Eric then ruled the branch duchy of Saxe-Ratzeburg-Lauenburg until 1338.

He Ain't Heavy, He's My Uncle: "He Ain't Heavy, He's My Uncle" is an episode of the BBC sitcom "Only Fools and Horses".  It was the fifth episode of series 7, and was first broadcast on 27 January 1991.  The title of the episode is derived from the song "He Ain't Heavy, He's My Brother".  In the episode, Uncle Albert is mugged and, thinking he's become a burden, decides to leave Nelson Mandela House.

Uncle Albert: Albert Gladstone Trotter, better known as Uncle Albert, is a fictional character in the BBC sitcom "Only Fools and Horses".  He was introduced during the fourth series as a replacement for the character of Grandad due to the sudden death of actor Lennard Pearce in 1984.  He was portrayed by Buster Merryfield.

Albert Kesselring: Albert Kesselring (30 November 1885 – 16 July 1960) was a German "Luftwaffe Generalfeldmarschall" during World War II.  In a military career that spanned both World Wars, Kesselring became one of Nazi Germany's most skilful commanders, and one of the most highly decorated, being one of 27 soldiers awarded the Knight's Cross of the Iron Cross with Oak Leaves, Swords and Diamonds.  Nicknamed "Smiling Albert" by the Allies and "Uncle Albert" by his troops, he was one of the most popular generals of World War II with the rank and file.

Roman switch line: The Roman switch line was a German line of defense during World War II in Italy branching off the Caesar C line and running north of Rome towards coast of the Tyrrhenian Sea.  The next line was Trasimene Line in central Italy which was intended to delay the Allies and allow the completion of the Gothic Line a major defensive works north of Florence.

Edit (Regina Spektor song): "Edit" is an Anti-folk/Indie rock song from Anti-folk singer Regina Spektor, released in the summer of 2006 on the album "Begin to Hope".  The line "You don't have no Doctor Robert/You don't have no Uncle Albert" references the Beatles' song "Doctor Robert" as well as Paul and Linda McCartney's 1970 hit "Uncle Albert".  "Edit" was covered by British anti-folk band The Red Army.

I Love to Laugh: "I Love to Laugh", also called "We Love to Laugh", is a song from Walt Disney's film "Mary Poppins".  It was composed by Richard M. Sherman and Robert B. Sherman.  The song is sung in the film by "Uncle Albert" (Ed Wynn), and "Bert" (Dick Van Dyke) as they levitate uncontrollably toward the ceiling, eventually joined by Mary Poppins (Julie Andrews) herself.  The premise of the scene, that laughter and happiness cause Uncle Albert (and like-minded visitors) to float into the air, can be seen as a metaphor for the way laughter can "lighten" a mood.  (Compare Peter Pan's flight power, which is also powered by happy thoughts.)  Conversely, thinking of something sad literally brings Albert and his visitors "down to earth" again.  The song states a case strongly in favor of laughter, even if Mary Poppins appears to disapprove of Uncle Albert's behavior, especially since it not only complicates the task of getting Albert down, but the infectious mood sends Bert and the Banks children into the air as well.

John II, Duke of Saxe-Lauenburg: John II of Saxe-Lauenburg (c. 1275 – 22 April 1322) was the eldest son of John I of Saxony and Ingeborg Birgersdotter of Småland (c. 1253–30 June 1302, Mölln), a daughter or grandchild of Birger jarl.  He ruled Saxony jointly with his uncle Albert II and his brothers Albert III and Eric I, first fostered by Albert II, until coming of age.  In 1296 John II, his brothers and their uncle divided Saxony into Saxe-Wittenberg, ruled by Albert II, and Saxe-Lauenburg, jointly ruled by the brothers between 1296 and 1303 and thereafter partitioned among them.  John II then ruled the branch duchy of Saxe-Mölln, later extended to become Saxe-Bergedorf-Mölln.  In 1314 he officiated as Saxon Prince-elector in an election of a German king.

Trasimene Line: The Trasimene Line (so-named for Lake Trasimene, the site of a major battle of the Second Punic War in 217 BCE) was a German defensive line during the Italian Campaign of World War II.  It was sometimes known as the Albert Line.  The German Commander-in-Chief (C-in-C), "Generalfeldmarschall" Albert Kesselring, used the line to delay the Allied northward advance in Italy in mid June 1944 to buy time to withdraw troops to the Gothic Line and finalise the preparation of its defenses.

Strategic War Game of 1905: The Strategic War Game of 1905 was a wargame run by the British General Staff between January and May 1905.  The game was umpired by James Grierson, an expert on the German Army.  There were three sides: Colonel Charles Edward Callwell played the British commander-in-chief, William Robertson played the German commander-in-chief with Arthur Lynden-Bell playing that of the Belgian Army.  Grierson had been the British military attaché to Berlin from 1896-1900, where he had had experience of their Kriegsspiel.

Supporting paragraphs: Trasimene Line Albert Kesselring
Answer: Albert Kesselring