The invention relates to an emergency truck comprising a series of interconnecting modules which form a hugely-versatile assembly for providing disaster and emergency aid and which enable the combined use of different resources. The invention is equipped with: an electric power-generating and -control unit; a second unit comprising a compressor and clearance; a third unit comprising two water-storage containers, for extraction or discharge purposes; and a fourth unit comprising a series of hose connectors and nozzles. The assembly further comprises emergency lighting and general lighting which can be directed in a motorised manner.