| Services of Supply American Expeditionary Forces | |
|---|---|
 S. O. S. Distinctive Cloth Insignia | |
| Active | 1917 – 1919 |
| Disbanded | August 31, 1919 |
| Country |  United States |
| Branch | Army |
| Role | Combat service support |
| Headquarters | Tours, France |
| Nickname(s) | S. O. S. |
| Engagements | |
| Commanders | |
| Notable commanders | Major General Francis J. Kernan Major General James G. Harbord |
The Services of Supply (S. O. S.) was the support chain of the American Expeditionary Forces in France, England, Italy and the Netherlands during World War I. It was disbanded on August 31, 1919, in France.