During the Second World War, the Federal Route 1 sustained heavy damages being resulted from the Malayan Campaign between the British army and the Imperial Japanese Army. During the campaign, it was estimated that more than 100 bridges were blown by the Royal Engineers in order to stop the Japanese advances southwards. Among the most famous bridges being blown were the Sungai Kelamah Bridge (also known as the Gemencheh Bridge), Gemas Bridge and Buloh Kasap Bridge – all of them were located at the Federal Route 1 – as a result of the Battle of Gemas which had claimed the lives of more than 1,000 Imperial Japanese soldiers. After the Second World War ended, the FT1 road was restored and damaged bridges were rebuilt.