The 1956 Worlds were held in Saint-Yan, France and saw the SGS 2-25 flown in the two-place category, by Kemp Trager and Gene Miller.
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Schweizer Aircraft supplied all the gliders for the US team: the sole Schweizer SGS 1-23E was purpose built for Paul MacCready, a Schweizer SGS 1-23D for Paul A Schweizer and the SGS 2-25 to be flown by Stan Smith and Bob Kidder.
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This was a joint USAF Cambridge Research Center and UCLA Department of Meteorology research project to gain a better understanding of Lee waves and was flown in the Sierra Nevada mountains of California.
Schweizer brothers | SGS | Schweizer Radio DRS | Schweizer SGS 1-23 | Schweizer Fernsehen | SGS S.A. | Schweizer-Reneke | Schweizer Illustrierte | Schweizer Aircraft | Peter Schweizer | Irène Schweizer | ''General Alexander Hays'' (c. 1914) by J. Otto Schweizer |
On November 4, 1945 Frank Hurtt and Paul A. Schweizer broke the multi-place duration record in a TG-3A.
The USAFA TG-4s were all donated to other US government agencies, such as the Civil Air Patrol or to aviation museums.
The USAAF, impressed by the German Army's use of gliders to capture the Belgian fortress of Eben-Emael during the campaign of the previous summer, had decided to commence a glider pilot training program.
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In late 1937 the Airhoppers Gliding Club of Long Island, New York approached the Schweizer brothers to see about the design of a Schweizer two-place glider specifically for training purposes.