Question: Darel McKinney was among the U.S. Marines decorated for his actions during the Battle of Belleau Wood in the spring of 1918. In which country did it take place?

Context articles: American Expeditionary Forces
Darel McKinney
Elmo M. Haney
USS Belleau Wood (LHA-3)
USS Belleau Wood
Mayaguez incident
Battle of Belleau Wood
Maurice E. Shearer
Aisne-Marne American Cemetery and Memorial
William H. Berry

The American Expeditionary Forces (AEF) was the expeditionary force of the United States Army during World War I.
 It was established on July 5, 1917, in France under the command of General John J. Pershing.
 During the United States campaigns in World War I it fought alongside the French Army, British Army, and Canadian Army on the Western Front, against the German Empire.
 A minority of the AEF troops also fought alongside the Italian Army in that same year, against the Austro-Hungarian Army.
 The AEF helped the French Army on the Western Front during the Aisne Offensive (at the Battle of Château-Thierry (1918) and Battle of Belleau Wood) in the summer of 1918, and the AEF fought its major actions in the Battle of Saint-Mihiel and the Meuse-Argonne Offensive in the latter part of 1918.
Darel McKinney served in the United States Marine Corps during World War I.
 He would be awarded the Navy Cross and Distinguished Service Cross for his actions during the Battle of Belleau Wood.
St Elmo Murray Haney (1898 - 1979) was a Master Gunnery Sergeant in the United States Marine Corps.
 As a veteran of many early campaigns in the Marine Corps, he was considered the epitome of the "old breed" Marine and a source of inspiration during the tough battles of the Pacific Campaign in World War II.
 Author Eugene Sledge described Haney as being, "everywhere at once, correcting mistakes and helping out".
 As one who fought in some of the most fiercest fighting of the time, he had the respect of the Marines.
 In World War I, he fought in the Battle of Belleau Wood with the 5th Marine Regiment.
 In 1930, between the wars, he was stationed in Shanghai and played in the outfield for the Fourth Marine Regiment Baseball Team.
 He also served in France, Nicaragua, Iceland and on the Amazon.
USS "Belleau Wood" (LHA-3), nicknamed "Devil Dog", was the second ship named after the Battle of Belleau Wood in World War I.
 Her keel was laid down on 5 March 1973 at Pascagoula, Mississippi, by Ingalls Shipbuilding.
 She was launched on 11 April 1977, and commissioned on 23 September 1978, with Captain T.C. Steele in command.
Two ships of the United States Navy have been named Belleau Wood, after the Battle of Belleau Wood near Château-Thierry in France.
The "Mayaguez" incident took place between Democratic Kampuchea and the United States from May 12–15, 1975, less than a month after the Khmer Rouge took control of the capital Phnom Penh ousting the U.S. backed Khmer Republic.
 It was the last official battle of the Vietnam War.
 The names of the Americans killed, as well as those of three U.S. Marines who were left behind on the island of Koh Tang after the battle and were subsequently executed by the Khmer Rouge, are the last names on the Vietnam Veterans Memorial.
 The merchant ship's crew, whose seizure at sea had prompted the U.S. attack, had been released in good health, unknown to the U.S. Marines or the U.S. command of the operation before they attacked.
 Nevertheless, the Marines boarded and recaptured the ship anchored offshore a Cambodian island, finding it empty.
The Battle of Belleau Wood (1–26 June 1918) occurred during the German Spring Offensive in World War I, near the Marne River in France.
 The battle was fought between the U.S. 2nd (under the command of Major General Omar Bundy) and 3rd Divisions along with French and British forces against an assortment of German units including elements from the 237th, 10th, 197th, 87th, and 28th Divisions.
 The battle has become a key component of the lore of the United States Marine Corps.
Maurice Edwin Shearer (December 19, 1879 – June 26, 1953) was a highly decorated Brigadier General in the United States Marine Corps.
 In 1918, Major Shearer of the 5th Marine Regiment, led Marines in the World War I Battle of Belleau Wood in France, where he was awarded the Navy Cross, Distinguished Service Cross, Navy Distinguished Service Medal, Silver Star, French Legion of Honor (Chevalier) and Croix de Guerre.
The Aisne-Marne American Cemetery and Memorial is a 42 acre World War I cemetery in Belleau, Northern France.
 It is at the foot of the hill where the Battle of Belleau Wood was fought, with many American fatalities.
 The cemetery also contains burials from the Battle of Château-Thierry, later that summer.
William H. Berry (September 9, 1852 – June 19, 1928) was a former Treasurer of the U.S. state of Pennsylvania.
 He also was the mayor of Chester, Pennsylvania shortly in 1905, before resigning to run for Treasurer.
 Berry was born on September 9, 1852 in Edwardsville, Illinois.
 Berry died on June 19, 1928 in a hospital in Chester.William H. Berry also served as Collector of the Port of Philadelphia.
 His son, US Marine Major Benjamin S. Berry, served in World War One, and for his actions on June 6, 1918 in Belleau Wood was awarded the Distinguished Service Order, the Navy Cross, and the Croix de Guerre from the government of France.