A missile launching assembly comprising: - a flatrack support base which extends between a front end (FE) and a rear end (RE) along a main extension direction (D), the support base being orientable between a transport angular position and an launching angular position; - at least one launching frame secured to the support base adapted and configured to support at least one missile launching container; - a first launching container containing a respective first missile is included; and - at least one rear wheel assembly at the rear end (RE), the rear wheel assembly comprising at least one first rear wheel with a first rear rotation axis which is substantially parallel to said support base ; and wherein: - the support base comprises at least one gripping element , configured to allow the lifting of the support base by lifting means in order to unload the support base from, or to load the support base onto the mounting frame of a transport vehicle ; characterized by : - the at least one launching frame is secured to the support base to be rotationally integral therewith; whereby - the launching frame comprises at least one pair of uprights ; - coupling elements (S1, S2) are included, by means of which the first launching container is removably secured to the launching frame between the pair of uprights , wherein the coupling elements (S1, S2, 101, 102) comprise a first guide system (S1) adapted and configured to allow a guided sliding movement of the first launching container between said uprights along a first stroke delimited between a first initial insertion position and a first final securing position; said at least one rear wheel assembly comprises at least a second rear wheel with a second rear rotation axis which forms a non-null angle with said first rotation axis. - a flatrack support base which extends between a front end (FE) and a rear end (RE) along a main extension direction (D), the support base being orientable between a transport angular position and an launching angular position; - at least one launching frame secured to the support base adapted and configured to support at least one missile launching container; - a first launching container containing a respective first missile is included; and - at least one rear wheel assembly at the rear end (RE), the rear wheel assembly comprising at least one first rear wheel with a first rear rotation axis which is substantially parallel to said support base ; - the support base comprises at least one gripping element , configured to allow the lifting of the support base by lifting means in order to unload the support base from, or to load the support base onto the mounting frame of a transport vehicle ; - the at least one launching frame is secured to the support base to be rotationally integral therewith; whereby - the launching frame comprises at least one pair of uprights ; - coupling elements (S1, S2) are included, by means of which the first launching container is removably secured to the launching frame between the pair of uprights , wherein the coupling elements (S1, S2, 101, 102) comprise a first guide system (S1) adapted and configured to allow a guided sliding movement of the first launching container between said uprights along a first stroke delimited between a first initial insertion position and a first final securing position; <EOS>