Sanderson was transferred to the Marine Corps Reserve Flying Corps and designated Naval Aviator on 14 January 1919. He was also appointed second lieutenant (provisional) on the same date. Sanderson subsequently served as flight instructor at Miami Field and then participated in submarine patrols off the coast of Florida and Cuba.
Dive bombing
When the situation on Haiti escalated, Sanderson was transferred to the Squadron "E" attached to the 1st Provisional Brigade of Marines and sailed for Haiti aboard the troopshipUSS Kittery on March 15, 1919. He arrived at Port-au-Prince at the end of March.
During one of the skirmishes with "Cacos" bandits, Sanderson flying the Curtiss JN-4 plane was ordered to attack a group of bandits near the old stone French fort, but his squadron had not received requested bomb racks. Sanderson improvised canvas mail sacks instead of bomb racks. He subsequently dropped light bombs from a shallow dive on the enemy and was successful in completing the mission. Although Sanderson called it "Glide bombing", it helped develop the later dive bombing technique.[1]
Further interwar service
Sanderson returned to the United States in March 1920 and was assigned for instruction at Officers Training School within Quantico Base, Virginia. He graduated one year later and was subsequently selected for special flight with De Havilland 4A plane from Washington, D.C. to Santo Domingo. Sandy set a new record in then-longest round-trip flight over water and land and received Distinguished Flying Cross for this feat.[2][3] He was also commissioned second lieutenant in the regular Marine Corps on May 2, 1921.
With the outbreak of World War II, First Marine Aircraft Group was expanded to the 1st Marine Aircraft Wing under the command of Colonel Louis E. Woods and Sanderson was appointed wing operations officer. Wing was sent to the Pacific in September 1942 and subsequently participated in the Guadalcanal campaign. For his service in this capacity, Sanderson was decorated with the Legion of Merit.
Sanderson assumed command of Marine Fleet Air, West Coast in September 1944 and continued in his previous training duties. Nevertheless, he was promoted to the rank of brigadier general in January 1945 and remained in command of Marine Fleet Air, West Coast until May 1945, when he was transferred back to Pacific. Sanderson relieved Brigadier General Louis E. Woods in command of 4th Marine Aircraft Wing and subsequently participated in air support operations over Gilbert and Marshall Islands. He also accepted surrender of Wake Island from Japanese admiral Shigematsu Sakaibara on September 4, 1945, who was later sentenced to death by a military tribunal for war crimes in connection with execution of 98 civilian workers in October 1943 and hanged on June 18, 1947.
Postwar service
Sanderson was attached to the staff of Aircraft, Fleet Marine Force, Pacific in March 1946, and served under Major General William J. Wallace. He remained there until the end of June and subsequently was appointed commanding general of 1st Marine Aircraft Wing based in Tientsin, China. The 1st MAW remained in China until October 1947, when it was ordered back to the United States. Upon his return, Sanderson was appointed deputy commander of the 1st MAW again under the command of Major General Woods and served in this capacity until July 1949.
Sanderson was subsequently appointed deputy commander of General William J. Wallace within Aircraft, Fleet Marine Force, Atlantic and later followed General Wallace to 2nd Marine Aircraft Wing also as deputy commander. He retired from active duty in December 1951 and advanced to the rank of major general on the retired list for having been specially commended in combat.
Nicaraguan Presidential Order of Merit with Gold star
Legion of Merit citation
The President of the United States of America takes pleasure in presenting the Legion of Merit to Colonel Lawson H. M. Sanderson (MCSN: 0-860), United States Marine Corps, for exceptionally meritorious conduct in the performance of outstanding services to the Government of the United States. From 17 October 1942 to 31 December 1942, Colonel Sanderson served as operations officer of the FIRST Marine Aircraft Wing at Guadalcanal, British Solomon Islands. In this capacity he was charged with the coordination, supervision and tactical employment of all army, Navy and Marine Corps aircraft based at Guadalcanal. He repeatedly exposed himself to enemy bombing, shelling by ground artillery and naval guns, and on some occasions when shells were bursting within a very short distance, when it was necessary to the task at hand. His efficient conduct of the operations of our aircraft, combined with his coolness and devotion to duty under fire have provided an excellent example to all personnel associated with him.[2]