| Unit Name: | Fourteenth United States Army |
| Dates: | Operation Quicksilver |
| Country: |  United States |
| Branch: | Regular Army |
| Type: | Field army |
| Command Structure: | First United States Army Group |
| Battles: | World War II |
| Notable Commanders: | John P. Lucas |
Fourteenth United States Army was a fictitious/military deception field army, under the command of John P. Lucas, developed under Operation Quicksilver as a part of the fictitious First United States Army Group.
As part of a psychological warfare campaign the Fourteenth Army was described by Agent Garbo in a message sent to German intelligence around 24 August 1944 claiming that his source in the ETO Services of Supply, who had a relative in the US 48th Infantry Division had advised him of:
...a lot of curious things about the basis of the composition of this Fourteenth US Army; amongst them he said that in their ranks there were many convicts who were released from prisons in the United States to be enrolled in a foreign legion of the French or Spanish type. It can almost be said that there are brigades composed of gangsters and bloodthirsty men, specially selected to fight against the Japanese, men who are not supposed to take prisoners, but instead to administer a cruel justice at their own hands.
What follows is the order of battle for the Fourteenth Army at one point during Operation Fortitude. The various formations changed as the operation continued in order to mislead Axis intelligence.
. Roger Fleetwood-Hesketh. Fortitude: The D-Day Deception Campaign. St Ermin's Press. 1999. 0-316-85172-8.