| 11th Infantry Brigade | |
|---|---|
&sq=Facebook&lang=en&file=File:11th_bct.svg) Shoulder sleeve insignia (approved 1966) | |
| Active |
|
| Country |  United States |
| Branch |  United States Army |
| Type | Infantry |
| Role | Light infantry (1967–1971) |
| Engagements | World War I Vietnam War |
| Insignia | |
| Distinctive unit insignia (approved 1966) | &sq=Facebook&lang=en&file=File:11_Inf_Bde_DUI.jpg) |
The 11th Infantry Brigade is an inactive infantry brigade of the United States Army. It was first formed as part of the 6th Division during World War I. It is best known for its service with the 23rd Infantry Division from 1967 through 1971 in the Vietnam War as a light infantry brigade. The brigade is known for its responsibility in the My Lai Massacre.