American Military Gliders of World War II
During the height of World War II, the United States developed a specialized fleet of gliders to transport troops and heavy equipment silently into hostile territory. Unlike powered aircraft, these gliders were towed by larger planes and released to glide toward their targets, providing a tactical advantage in surprise airborne assaults.
The Genesis of the Army Glider Program
The initiative began under Major General Henry "Hap" Arnold, who sought to develop aircraft capable of being towed to deliver personnel and cargo. This effort was formalized through Classified Technical Instructions (CTI-198 and CTI-203) in early 1941, authorizing the procurement of gliders with capacities for 2, 8, and 15 passengers.
While eleven companies were invited to participate in the experimental phase, only four showed interest: Frankfort Sailplane Company, Waco Aircraft Company, St. Louis Aircraft Corp., and Bowlus Sailplanes. Ultimately, only the Waco Aircraft Company successfully delivered prototypes that met the requirements of the Materiel Command. These included the eight-seat Waco CG-3 (later modified to nine seats) and the fifteen-seat Waco CG-4.
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Program Expansion and Leadership
In October 1941, Lewin B. Barringer was appointed as the Glider Specialist for the Air Staff, reporting directly to General Arnold. The Japanese attack on Pearl Harbor on December 7, 1941, accelerated the program's urgency. Initial goals were set for 1,000 pilots to operate 1,000 gliders (split evenly between eight-seat and fifteen-seat models), but by June 1942, the requirement for pilots surged to 6,000. Following Barringer's disappearance at sea in January 1943, Richard C. du Pont took over the program's direction.
Operational Deployment and the Waco CG-4A
The Waco CG-4A became the most widely utilized glider of the war. Constructed from a metal and wood frame covered in fabric, it was operated by a crew of two. It featured a normal cargo capacity of 3,710 lb, which allowed it to transport either 13 combat-equipped troops, a jeep, or a small artillery piece.
The CG-4A saw extensive action across multiple theaters, including:
- The invasion of Sicily (July 1943)
- The D-Day assault on France (June 6, 1944)
- Operation Market Garden (September 1944)
- The crossing of the Rhine (March 1945)
- Operations in the China-Burma-India Theater
As the war progressed, larger designs were developed, such as the 30-troop Waco CG-13A and the 42-troop Laister-Kauffman CG-10A. The CG-10 was particularly powerful, capable of carrying 10,850 lb of cargo, including two howitzers (large-caliber towed artillery pieces).
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Production and Legacy
The scale of production was immense. By the end of the war, the United States had built 14,612 gliders and trained over 6,000 pilots. Because of the high demand, production was decentralized; while based on Waco designs, gliders were manufactured by the Ford Motor Company, Cessna Aircraft Company, and even companies that typically produced pianos, furniture, and coffins. The final glider mission of the war took place at Luzon on June 23, 1945.
Post-war, the U.S. maintained only one glider regiment. After some exercises in 1949, glider operations were officially removed from Army capabilities on January 1, 1953. Today, the U.S. Air Force Academy still uses sailplanes to teach cadets the fundamentals of flight.
Navy and Marine Corps Amphibious Experiments
Parallel to the Army's efforts, the U.S. Navy explored the concept of amphibious gliders—aircraft with flying-boat hulls that could land on water. Proposed by officer Marc Mitscher in April 1941, the goal was to deliver an entire Marine Corps brigade of 715 men to beachheads, towed by Consolidated PBY-5A Catalina amphibians.
The Bureau of Aeronautics specified two types: a single-hulled version for 12 passengers and a twin-hulled version for 24. While the Allied Aviation Corporation (XLRA-1) and Bristol Aeronautical Corporation (XLRQ-1) produced single-hulled prototypes that flew in early 1943, the Navy and Marine Corps concluded the concept was impractical. The program was terminated on September 27, 1943, though prototypes were tested until December 1943, possibly for glider bomb development.
The Marine Corps also operated a training unit at Parris Island using Pratt-Read LNE-1 and Schweizer LNS-1 gliders, and evaluated 15 Army Waco CG-4As (designated as LRW-1). However, none of these Navy or Marine Corps initiatives reached operational status.
Key Facts
- Total Production: 14,612 gliders built by the end of WWII.
- Primary Model: The Waco CG-4A was the most widely used, carrying 13 troops or a jeep.
- Heavy Lift: The CG-10 could carry up to 10,850 lb, including two howitzers.
- Pilot Training: Over 6,000 glider pilots were trained by the U.S. Army.
- Diverse Manufacturing: Gliders were produced by automotive, aircraft, and even coffin manufacturers.
- Navy Outcome: Amphibious glider programs were deemed impractical and terminated in 1943.
| Model | Capacity/Load | Primary Use | Key Feature |
|---|---|---|---|
| Waco CG-4A | 13 troops / 3,710 lb | General Airborne Assaults | Most widely used; fabric-covered |
| Laister-Kauffman CG-10 | 10,850 lb | Heavy Equipment Transport | Could carry two howitzers |
| Waco CG-13A | 30 troops | Large Troop Transport | High-capacity troop carrier |
| XLRA-1 / XLRQ-1 | 12-24 passengers | Amphibious Delivery (Experimental) | Flying-boat hulls for water landing |
Frequently Asked Questions
What was the primary purpose of military gliders in WWII?
Military gliders were used to transport troops and heavy equipment, such as jeeps and artillery, silently into combat zones without the need for a runway, allowing for surprise airborne insertions.
Which glider was the most successful in American service?
The Waco CG-4A was the most successful and widely used, participating in major operations including the invasion of Sicily, D-Day, and Operation Market Garden.
Did the U.S. Navy ever use gliders in combat?
No. While the Navy and Marine Corps experimented with amphibious gliders and conducted training with non-amphibious models, these initiatives never resulted in operational combat use.
Who manufactured the gliders besides aircraft companies?
Due to the massive production requirements, the Ford Motor Company and various furniture, piano, and coffin manufacturers helped produce gliders based on Waco designs.
When did the U.S. Army stop using gliders?
Glider operations were officially removed from the United States Army's capabilities on January 1, 1953.