Citroën half-tracks made the first motor crossing of the Sahara in 1922–23, crossed Africa in the Croisière Noire of 1924–25 and Asia in the Croisière Jaune of 1931–32, went to the Antarctic with Byrd and to northern Canada with Bedaux in 1934, and towed the French artillery into 1940. Later four-wheel drives served the Spanish Guardia Civil, French forces overseas, utilities and fire brigades, and won the Dakar four times.
The three crossings led by Georges-Marie Haardt and Louis Audouin-Dubreuil — the Sahara in 1922–23, the Croisière Noire across Africa in 1924–25 and the Croisière Jaune across Asia in 1931–32 — and the half-tracks of Byrd’s Antarctic expedition and Bedaux’s sub-Arctic expedition in 1934.
Kégresse half-tracks with the French, Polish, Belgian and Uruguayan forces from the 1920s to 1940, the 2CV Sahara with the Guardia Civil and the Type 46 FOM lorry with French and African forces from 1962.
Half-tracks towing canal barges and carrying post over the Alpine passes in the 1920s and 1930s, a P107 fighting forest fires on Cap Ferret until 1979, and Dangel’s four-wheel-drive vans with utilities, the Post and fire brigades.