3rd Motorized Infantry Brigade (People's Republic of China)

The 7th Division (1st Formation) was created in February 1949 under the Regulation of the Redesignations of All Organizations and Units of the Army, issued by Central Military Commission on November 1, 1948, basing on the 2nd Independent Brigade, 3rd Column of the PLA Northwestern Field Army. Its history can be traced to the 358th Brigade(2nd Formation), 120th Division of Eighth Route Army, formed in April 1939.

The division is part of 3rd Corps. Under the flag of 7th division it took part in the Chinese Civil War. In June 1952 it absorbed the 9th Division from the same Corps and was attached to 1st Corps following the merge of 1st and 3rd Corps.

By then the division was composed of:
 * 19th Regiment;
 * 20th Regiment;
 * 21st Regiment(former 27th Regiment, 9th Division);
 * 212th Tank Self-Propelled Artillery Regiment (former 25th Regiment, 9th Division);
 * 303rd Artillery Regiment (former 26th Regiment, 9th Division);

In February 1953 the division entered Korea to took part in Korean War under the command of the Corps. Since then it became a part of the People's Volunteer Army until 1958.

In 1955 it renamed as 7th Infantry Division of the National Defense Force.

In 1958 it moved to Kaifeng, Henan province with the Corps HQ.

In 1960 it renamed as 7th Army Division.

In 1968 the 212th Tank Self-Propelled Artillery Regiment was detached from the division and formed the later 43rd Tank Regiment of the 11th Tank Division.

In December 1969 the division was renamed as 3rd Army Division, while the former 3rd Army Division renamed as 7th Army Division. Its 303rd Artillery Regiment became Artillery Regiment, 3rd Army Division.

By then the division was composed of:
 * 7th Regiment(former 19th Regiment);
 * 8th Regiment(former 20th Regiment);
 * 9th Regiment(former 21st Regiment);
 * Artillery Regiment.

In 1975 the division moved to Zhejiang Province with the Corps HQ to replace 20th Army Corps. Since then the division is stationed in Jinhua, Zhejiang Province.

In 1985 the division was remained a pack-horse infantry division, renaming as 3rd Infantry Division. The division then maintained as a Northern Infantry Division, Catalogue B unit.

In 1998 the division was reduced and renamed as 3rd Motorized Infantry Brigade.

In 2016 it's reported that the brigade has been converted to an air cavalry rapid response unit.