General Headquarters Liaison Regiment reported battlefield information straight to high level Intelligence and Operations Staff. This information consisted of everything a Commander needed to make decisions to win the battle. All commanders need to be aware of up to date and accurate information on what is happening on the frontline. GHQ Liaison Regiment gathered information by sending patrols and by communications intercept of units engaged in battle. This history tells the story of the background to the formation of 2 GHQ Liaison Regiment. The hard work of the unit has not completely been recognised by historians of the Second World War and perhaps this helps fill the gap in our knowledge. During the War the unit was greatly appreciated by all Allied unit in the Mediterranean and North West Europe campaigns. Without the service provided by the unit the Allies would have struggled to win the War.