When World War I broke out, 15 Company was deployed to France, equipped with horse transport, in support of the British Expeditionary Force.

The Unit was renamed 24 Company RASC and served in the Middle East, including transport duties at the Battle of El Alamein.

Four months later, equipped with AEC Mk 1 10 ton cargo vehicles, the Unit changed its title on disbandment of the RASC to become 15 Squadron Royal Corps of Transport (RCT).

The Squadron returned to the UK in 1983 and was based in Gaza Barracks, Catterick as part of the 2nd Infantry Division Transport Regiment; its vehicle fleet was also changed from the 10 ton AEC to Bedford TM 8 tonne, 4 x 22,000-litre Truck Tanker Fuel (TTFs) and associated Materials Handling Equipment (MHE).

In 1990, the Squadron deployed to Cyprus in support of the UNFICYP under the command of Major Steve Bragg and was mainly made up of Territorial Army (TA) personnel.

The Squadron deployed to Afghanistan in March 2008 on Op HERRICK 8, where it conducted numerous Combat Logistic Patrols to Sangin, Musa Qaleh and Now Zad.

Members of the Squadron were responsible for the protection and transportation of a turbine to the Kajaki Dam during Operation OQAB TSUKA (Eagles Summit in Pashtu).