Question: Which attack took place during the Hundred Days Offensive:  Meuse-Argonne Offensive or Battle of Guam?

Context paragraphs:
Canada's Hundred Days: Canada’s Hundred Days is the name given to the series of attacks made by the Canadian Corps between 8 August and 11 November 1918, during the Hundred Days Offensive of World War I.  Reference to this period as Canada's Hundred Days is due to the substantial role the Canadian Corps of the British First Army played during the offensive.

Battle of the Scarpe (1918): The Battle of the Scarpe was a World War I battle that took place during the Hundred Days Offensive between 26 and 30 August 1918.

Meuse-Argonne Offensive: The Meuse-Argonne Offensive, also known as the Maas-Argonne Offensive and the Battle of the Argonne Forest, was a major part of the final Allied offensive of World War I that stretched along the entire Western Front.  It was fought from 26 September 1918 until the Armistice of 11 November 1918, a total of 47 days.  The Meuse-Argonne Offensive was the largest in United States military history, involving 1.2 million American soldiers.  It was one of a series of Allied attacks known as the Hundred Days Offensive, which brought the war to an end.  The battle cost 28,000 German lives and 26,277 American lives.  It was the largest and bloodiest operation of World War I for the American Expeditionary Force (AEF), which was commanded by General John J. Pershing, and one of the deadliest battles in American history.  American losses were exacerbated by the inexperience of many of the troops, and tactics used during the early phases of the operation.

Hart Goodloe: Hart Goodloe (January 31, 1875 - March 21, 1954) was a surgeon in the First World War who served at Saint-Mihiel and the Meuse-Argonne Offensive.  Hart Goodloe was born in Danville, Kentucky in 1875.  He is a graduate of University of Louisville's School of Medicine and a member of Phi Chi Medical Fraternity's Alpha Alpha-Gamma Chapter serving as Grand Presiding Senior (President) of the Grand Chapter from 1900 to 1901.  On August 13, 1917 he enlisted in the U.S. Army at age 42.  He was commissioned to the rank of major and was a surgeon in the army.  By 1918 he was sent over to France and saw action at the Battle of Saint-Mihiel and Meuse-Argonne Offensive.  He was discharged from service on March 18, 1919, and resided in St. Louis, Missouri.  His war documents were destroyed in a fire at the St. Louis archives.  He died at Veterans Hospital, Biloxi, Mississippi, on March 21, 1954 at age 79.

Battle of Guam (1944): The Second Battle of Guam (21 July – 10 August 1944) was the American recapture of the Japanese-held island of Guam, a U.S. territory in the Mariana Islands captured by the Japanese from the U.S. in the 1941 First Battle of Guam during the Pacific campaign of World War II.

Second Battle of Bapaume: The Second Battle of Bapaume was a battle of the First World War that took place at Bapaume in France, from 21 August 1918 to 3 September 1918.  It was a continuation of the Battle of Albert and is also referred to as the second phase of that battle.  The British and Dominion attack was part of what was later known as the Allies' Hundred Days Offensive.

Battle of Cambrai (1918): The Battle of Cambrai, 1918 (also known as the Second Battle of Cambrai) was a battle between troops of the British First, Third and Fourth Armies and German Empire forces during the Hundred Days Offensive of the First World War.  The battle took place in and around the French city of Cambrai, between 8 and 10 October 1918.  The battle incorporated many of the newer tactics of 1918, in particular tanks.  The attack was an overwhelming success with light casualties in an extremely short amount of time.

Hundred Days Offensive: The Hundred Days Offensive was the final period of the First World War, during which the Allies launched a series of offensives against the Central Powers on the Western Front from 8 August to 11 November 1918, beginning with the Battle of Amiens.  The offensive essentially pushed the Germans out of France, forcing them to retreat beyond the Hindenburg Line, and was followed by an armistice.  The term "Hundred Days Offensive" does not refer to a specific battle or unified strategy, but rather the rapid series of Allied victories starting with the Battle of Amiens.

Battle of the Canal du Nord: The Battle of Canal du Nord was part of a general Allied offensive against German positions on the Western Front during the Hundred Days Offensive of World War I.  The battle took place in the Nord-Pas-de-Calais region of France, along an incomplete portion of the Canal du Nord and on the outskirts of Cambrai between 27 September and 1 October 1918.  To avoid the risk of having extensive German reserves massed against a single Allied attack, the assault along the Canal du Nord was undertaken as part of a number of closely sequenced Allied attacks at separate points along the Western Front.  It began one day after the Meuse-Argonne Offensive, one day before an offensive in the Flanders region of Belgium and two days before the Battle of St. Quentin Canal.

Dury Memorial: The Dury Memorial is a World War I Canadian war memorial that commemorates the actions of the Canadian Corps in the Second Battle of Arras, particularly their breakthrough at the Drocourt-Quéant Line switch of the Hindenburg Line just south of the town of Dury.  The Drocourt-Quéant Line was a main position in the German Army's defensive position in the area.  The action took place on 2 and 3 September 1918 during a period known as the Hundred Days Offensive or Canada's Hundred Days.  Particularly noteworthy for such a brief battle was that seven Canadians earned a Victoria Cross on 2 September during the battle.

Supporting paragraphs: Meuse-Argonne Offensive Battle of Guam (1944)
Answer: Meuse-Argonne Offensive