Question: Which of the following took place during World War II, Battle of Iwo Jima or Battle of Shiloh?

Context articles: Battle of Iwo Jima
Wilson D. Watson
Joe Rosenthal
South Field (Iwo Jima)
Ray A. Robinson
Iwo Jima (video game)
Iwo Jima
Shadow of Suribachi
Bill Genaust
Battle of Shiloh

The Battle of Iwo Jima (19 February – 26 March 1945) was a major battle in which the United States Marine Corps landed on and eventually captured the island of Iwo Jima from the Imperial Japanese Army during World War II.
 The American invasion, designated Operation Detachment, had the goal of capturing the entire island, including the three Japanese-controlled airfields (including the South Field and the Central Field), to provide a staging area for attacks on the Japanese main islands.
 This five-week battle comprised some of the fiercest and bloodiest fighting of the Pacific War of World War II.
Wilson Douglas Watson (February 16, 1922 – December 19, 1994) was a United States Marine Corps private who received the Medal of Honor for his actions on Iwo Jima during World War II.
 He single-handedly killed 90 enemy soldiers, thus enabling his platoon to advance, earning him the name "One-Man Regiment" of Iwo Jima.
 After World War II, Watson continued his military service in the United States Army.
 At the time he retired, he held the rank of Staff Sergeant.
Joseph John Rosenthal (October 9, 1911 – August 20, 2006) was an American photographer who received the Pulitzer Prize for his iconic World War II photograph "Raising the Flag on Iwo Jima", taken during the Battle of Iwo Jima.
 His picture became one of the best-known photographs of the war.
South Field was a World War II airfield on Iwo Jima in the Volcano Islands, located in the Central Pacific.
 The Volcano Islands are part of Japan.
 The airfield was located on the southern corner of Iwo Jima located on the Motoyama plateau, to the north of Mount Suribachi.
 South Field was significant to the overall Battle of Iwo Jima.
General Ray Albert Robinson (June 1, 1896 – March 26, 1976) was a United States Marine Corps general who served in the Corps more than 40 years.
 His long and colorful career included service in France during the First World War (as Aide-de-Camp to Smedley D. Butler), action at Guam and Iwo Jima in World War II, sea duty, and China service between World Wars.
 He also served in 1929 as Officer in Charge of the Marine Detachment which built President Herbert Hoover's Rapidan Camp mountain retreat near Criglersville, Virginia.
 Robinson twice earned the Legion of Merit with Combat "V" during World War II — the first for outstanding service in July and August 1944, as Chief of Staff of the 3d Marine Division during the planning and execution of the recapture of Guam; and the second for outstanding service from October 1944 to March 1945, as Chief of Staff of the 5th Marine Division during the preparation and combat phases of the Iwo Jima campaign.
Iwo Jima is a turn-based strategy video game developed and published by Personal Software Services for the Commodore 64 and ZX Spectrum in 1986.
 It is the second instalment to the "Strategic Wargames" series.
 The game is set during the Battle of Iwo Jima in the Pacific Ocean theatre of World War II and revolves around the United States Marine Corps' objective to secure the island of Iwo Jima from the Imperial Japanese Army.
Iwo To (硫黄島 , Iō-tō , "sulfur island") , known in English as Iwo Jima (    ), is an island of the Japanese Volcano Islands chain south of the Ogasawara Islands and together with them forms the Ogasawara Archipelago also known as the Bonin Islands.
 The island of 21 km (8 square miles) is 1200 km south of mainland Tokyo and is administered as part of Ogasawara, one of the eight villages of Tokyo inhabited only by Japan Self-Defense Forces and used by the U.S. Navy for carrier practice.
 It was the setting of the February–March 1945 Battle of Iwo Jima involving the United States and a small number of elements of the British Pacific Fleet versus the Empire of Japan during World War II.
 The island grew in recognition outside Japan when the photograph "Raising the Flag on Iwo Jima" was taken on Mount Suribachi, the highest point at 160 metres (528 feet), during the battle by Associated Press photographer Joe Rosenthal.
 The U.S. occupied Iwo Jima until 1968 when it was returned to Japan.
Shadow of Suribachi: Raising The Flags on Iwo Jima (1995) is a book released during the 50th anniversary of the flag-raising(s) atop Mount Suribachi on Iwo Jima during World War II which was written by Parker Bishop Albee, Jr. and Keller Cushing Freeman.
 The book mainly examines the controversy over the identification of the flag-raiser who was positioned at the base of the flagpole in Joe Rosenthal's "Raising the Flag on Iwo Jima" photograph of the second flag-raising on February 23, 1945.
William Homer "Bill" Genaust (October 12, 1906 – March 4, 1945) was a United States Marine Corps sergeant who was killed in action on Iwo Jima while serving as a war photographer in World War II.
 He is best known for filming the second U.S. flag-raising on top of Mount Suribachi on February 23, 1945, during the battle of Iwo Jima, using a then modern and lightweight 16 millimeter motion picture camera which used 50-foot color film cassettes.
 His motion picture of the flag-raising became one of the best-known film clips of the war.
 The Marine Corps War Memorial in Arlington, Virginia, depicts the second flag-raising on Mount Suribachi by six Marines.
The Battle of Shiloh, also known as the Battle of Pittsburg Landing, was a major battle in the Western Theater of the American Civil War, fought April 6–7, 1862, in southwestern Tennessee.
 A Union force known as the Army of the Tennessee under Major General Ulysses S. Grant had moved via the Tennessee River deep into Tennessee and was encamped principally at Pittsburg Landing, Tennessee on the west bank of that river, where the Confederate Army of Mississippi, under General Albert Sidney Johnston and second-in-command P. G. T. Beauregard, launched a surprise attack on Grant's army from its base in Corinth, Mississippi.
 Johnston was mortally wounded during the fighting; Beauregard, who thus succeeded to command of the army, decided against pressing the attack late in the evening.
 Overnight Grant was reinforced by one of his own divisions stationed further north and was joined by three divisions from another Union army under Maj. Gen. Don Carlos Buell.
 This allowed them to launch an unexpected counterattack the next morning which completely reversed the Confederate gains of the previous day.