MacGillivray Milne (August 19, 1882 – January 26, 1959) was a United States Navy Captain, and the 27th Governor of American Samoa from January 20, 1936, to June 3, 1938.
 After graduating from the United States Naval Academy, Milne served many posts in the Navy, including heading the Department of Modern Languages at the Naval Academy.
 He was a veteran of a large numbers of conflicts, including the Philippine–American War, the United States occupation of Veracruz, and both World War I and World War II.
 Milne commanded a number of ships, but his last one was the battleship " ".
 After the ship struck a private fishing vessel and killed two civilians, Milne was court-martialed and stripped of three grades which determined his eligibility for promotion.
 As Governor, Milne pushed for the modernization of American Samoa, and sought increased federal aid for the islands; his efforts to obtain additional funding for the island largely ended in failure.
 He died in 1959 at the Naval Hospital Oakland, and was buried in Sparkill, Rockland County, New York.
The "Portland" class of heavy cruisers was a class of ships designed and constructed by the United States Navy in 1930.
 The two ships of the class, "Portland" and "Indianapolis" , saw extensive service during the Pacific War in World War II.
USS "Arctic" (AF-7) was an "Arctic"-class stores ship acquired by the United States Navy shortly after World War I, which saw extensive service in World War II.
 She served in the dangerous Pacific Ocean, delivering food and household items to ships and bases.
USS "Portland" (CL/CA–33), the lead ship of her class of cruiser, was the first ship of the United States Navy named after the city of Portland, Maine.
 Launched in 1932, she saw a number of training and goodwill cruises in the interwar period.
 In World War II, she saw extensive service beginning at the 1942 Battle of Coral Sea, where she escorted the aircraft carrier "Yorktown" and picked up survivors from the sunken carrier "Lexington" .
 She screened for "Yorktown" again in the Battle of Midway, picking up her survivors as well.
 She then supported the carrier "Enterprise" during the initial phase of the Guadalcanal Campaign later that year, and was torpedoed during the Naval Battle of Guadalcanal.
 The torpedo inflicted heavy damage which put her out of action for six months as she was repaired in Sydney, Australia and later San Diego, California.
The "New York" class of battleship was a class of ships designed and constructed by the United States Navy between 1908 and 1914.
 The two ships of the class, "New York" and "Texas" , each saw extensive service beginning in the occupation of Veracruz, World War I, and World War II.
The United States occupation of Veracruz began with the Battle of Veracruz and lasted for seven months, as a response to the Tampico Affair of April 9, 1914.
 The incident came in the midst of poor diplomatic relations between Mexico and the United States, and was related to the ongoing Mexican Revolution.
USS "Valley Forge" (CV/CVA/CVS-45, LPH-8) was one of 24 "Essex"-class aircraft carrier s built during and shortly after World War II for the United States Navy.
 The ship was the first US Navy ship to bear the name, and was named after Valley Forge, the 1777–1778 winter encampment of General George Washington's Continental Army.
 "Valley Forge" was commissioned in November 1946, too late to serve in World War II, but saw extensive service in the Korean War and the Vietnam War.
 She was reclassified in the early 1950s as an attack carrier (CVA), then to an antisubmarine carrier (CVS), and finally to an amphibious assault ship (LPH), carrying helicopters and marines.
 As a CVS she served in the Atlantic and Caribbean.
 She was the prime recovery vessel for an early unmanned Mercury space mission.
 After conversion to an LPH she served extensively in the Vietnam War.
 "Valley Forge" was awarded eight battle stars for Korean War service and nine for Vietnam War service, as well as three Navy Unit Commendations.
The "Humber"-class monitors were three large gunboats under construction for the Brazilian Navy in Britain in 1913.
 Designed for service on the Amazon River, the ships were of shallow draft and heavy armament and were ideally suited to inshore, riverine and coastal work but unsuitable for service at sea, where their weight and light draft reduced their speed from a projected twelve knots to under four.
 The class comprised "Humber" , "Mersey" and "Severn" .
 All three were taken over by the Royal Navy shortly before the outbreak of the First World War and were commissioned as small monitors.
 All three saw extensive service during the war and were sold in 1919.
SMS "Breslau" was a "Magdeburg"-class cruiser of the Imperial German Navy, built in the early 1910s.
 Following her commissioning, "Breslau" and the battlecruiser "Goeben" were assigned to the "Mittelmeerdivision" (Mediterranean Division) in response to the Balkan Wars.
 After evading British warships in the Mediterranean to reach Constantinople, "Breslau" and "Goeben" were transferred to the Ottoman Empire in August 1914, to entice the Ottomans to join the Central Powers in World War I.
 The two ships, along with several other Ottoman vessels, raided Russian ports in October 1914, prompting a Russian declaration of war.
 The ships were renamed "Midilli" and "Yavûz Sultân Selîm", respectively, and saw extensive service with the Ottoman fleet, primarily in the Black Sea against the Russian Black Sea Fleet.
Vice Admiral Daniel Edward Barbey (23 December 1889 – 11 March 1969) was an officer in the United States Navy who served in World War I and World War II.
 A graduate of the Naval Academy, he participated in the 1912 United States occupation of Nicaragua and the 1915 United States occupation of Veracruz.
 While serving with the War Plans Section of the Bureau of Navigation in Washington, D.C. between the World Wars, developed an interest in amphibious warfare.
 In 1940 he produced "Fleet Training Publication 167 – Landing Operations Doctrine, United States Navy", which would become the Navy's "bible" of amphibious operations, and would remain in use throughout World War II.

Question: The "New York" class of battleship was a class of ships designed and constructed by the United States Navy, it saw extensive service beginning in the United States occupation of Veracruz, which occurred as a response to the Tampico Affair on which date?
Answer: April 9, 1914