123 Infantry Battalion (TA) Grenadiers popularly known as "Jaipur Terriers" celebrated its 61st Raising Day on November 1, 2016. The unit was raised at Senapati House, Jaipur on November 1, 1956 by Lt Col Zorawar Singh as its first Commanding Officer. Senapati House in Jhotwara Jaipur was built by Maharaja Sawai Ram Singh, the ruler of Jaipur State in Mid 19 Century. The Battalion was launched into action in February 1960 for Counter Insurgency tasks in Assam and Nagaland. The unit has taken part in all the Major operations including Indo-China War, Indo-Pak War, Operations Cactus Lily, Trident, Vijay, Sahayata, Parakram and has completed seven tenures of Operation Rakshak (J&K).
The battalion has earned laurels in all fields including aid to civil authorities, aforestation in the desert of Rajasthan, the IX Asian games 1982, Operations Meghrahat during the J&K floods.
The battalion has been awarded the COAS Trophy for the Best TA Battalion three times and the best TA battalion within Command on eight occasions. In the year 2013 on Army Day, unit was awarded with GOC-in-C, South Western Command Unit Appreciation, which is a rare achievement for a TA unit. The battalion has a rare distinction of high number of decorations in individual category three VSMs, 14 COAS Commendation Cards, 11 VCOAS Commendation Cards, 52 GOC-in-C Commendation Cards.
"Jaipur Terriers" was awarded with 71 Sub Area Championship Banner (2015-16) by Maj Gen KJS Gill, Sena Medal, GOC, 71 Sub Area on September 24, 2016. The honour was bestowed to the Battalion for its "Forever Excellence" service rendered in all spheres since October 2013. Col GS Chundawat, VrC, Commanding Officer and Subedar Major Mohd Rafik Ali, Sena Medal received the championship banner.