 | This article includes a list of general references, but it lacks sufficient corresponding inline citations. (June 2010) |
| 66th Armor Regiment | |
|---|---|
 66th Armor Regiment coat of arms | |
| Active | 1918–present |
| Country |  United States |
| Branch |  United States Army |
| Type | Armor |
| Role | Armored warfare |
| Size | Two battalions |
| Garrison/HQ | Fort Carson, CO (1st Battalion); Fort Riley, KS (3rd Battalion) |
| Nickname(s) | "Burt's Knights" |
| Motto(s) | Semper in Hostes (Always Into the Enemy) |
| Engagements | World War I World War II Korean War Operation Desert Storm Iraq War |
| Commanders | |
| Notable commanders | George S. Patton (304th Tank Brigade) |
| Insignia | |
| Distinctive unit insignia |  |
The 66th Armor Regiment is the oldest armored unit in the United States Army, tracing its lineage to the 301st Tank Battalion which served with distinction soon after it was formed in the First World War; the 301st trained at Camp Meade, Maryland, where then-Cpt. Dwight D. Eisenhower was an instructor. It has often been rumored that the 301st, the parent unit of the 66th, was first commanded by Col. George S. Patton, but this appears not to have been the case; while Patton was the first officer assigned to the Tank Corps, and while the 301st Tank Battalion was the first unit formed, Patton went nearly immediately to France to train Americans attached to Allied commands.[1] The 301st was the only American heavy tank battalion to have seen action in the war. After the war, the 301st transitioned in the Regular Army to become the 66th Infantry Regiment (Light Tanks) by way of the 16th Tank Battalion.[2]