In 1940, Roy joined the newly created 501st Parachute Battalion at Fort Benning and after two years of intensive training, he was appointed a commanding officer of the 508th Parachute Infantry Regiment. He was promoted to the rank of lieutenant colonel on October 20, 1942. Lindquist commanded the 508th Parachute Infantry Regiment throughout the whole war, during extensive training and maneuvers before the deployment oversea. The 508th Parachute Infantry arrived in England in January 1944 and participated in the Normandy Campaign, Operation Market Garden and Battle of the Bulge. He was succeeded in command of the regiment by Lieutenant Colonel Otho E. Holmes in December 1945. For his leadership of the regiment during the War, he was awarded with Silver Star, Legion of Merit, three Bronze Star Medals, Purple Heart and Combat Infantryman Badge by the Government of the United States. He was decorated with the Bronze Lion by the Government of the Netherlands for his service during Operation Market Garden. France decorated him with the Croix de guerre 1939-1945 for his part in Normandy Campaign.
Postwar service
After World War II, Lindquist was assigned to Infantry School at Fort Benning, Georgia. He was appointed an assistant commander of the Airborne Department of the school under command of Brigadier General William M. Miley. He served in this capacity until 1948, when he was transferred to Greece to become a member of the Joint Military Assistance Group during the Greek Civil War. He stayed there until 1950. For his service, Lindquist was awarded with the Order of the Phoenix in the grade of Officer by the Government of Greece. After his return to the States, Lindquist attended the National War College in Washington, D.C.. After graduation, he was appointed to the office of Assistant Chief Of Staff within Army Ground Forces. He was promoted to the rank of brigadier general in 1953 and appointed a commander of the 187th Airborne Regimental Combat Team, which was stationed in Korea and consisted from several Airborne units in the size of brigade. Lindquist stayed in Korea and was appointed a Chief of Staff and Deputy Commander of the IX Corps under the command of Lieutenant General James Edward Moore. Now a major general, Lindquist was transferred back to the States and posted to Fort Campbell, Kentucky, before he was appointed a commander of the 3rd Infantry Division in March 1957.
Decorations
Here is the ribbon bar of Major General Roy E. Lindquist: