Mechanised infantry
The latter division showed itself to be far more combat-capable than the former.
Having achieved spectacular successes in the offensive with tank-heavy formations during the Six-Day War, the Israel Defense Forces found in the Yom Kippur War of 1973 that a doctrine that relied primarily on tanks and aircraft had proven inadequate. As a makeshift remedy, paratroopers were provided with motorized transport and used as mechanized infantry in coordination with the armor.

See also: Armoured warfare

Notes: 

Sources: Dunstan, Simon. Vietnam Tracks: Armor In Battle 1945–1975. 1982 edition, Osprey Publishing; ISBN 0-89141-171-2.
Starry, Donn A., General. Armored Combat in Vietnam. 1980, Arno Press Inc. ISBN 0-672-52673-5.