Eh, yes and no. Red Alert 1 is part of both the Red Alert and Tiberium series. One ending results in RA2 and the other in Tiberian Dawn (C&C '95) but there’s no consensus on which ending leads to which game. I think that the Allied ending leads to TD and the Soviet ending leads to RA2, but there are arguments the other way, too.
Eh, yes and no. Red Alert 1 is part of both the Red Alert and Tiberium series. One ending results in RA2 and the other in Tiberian Dawn (C&C '95) but there’s no consensus on which ending leads to which game. I think that the Allied ending leads to TD and the Soviet ending leads to RA2, but there are arguments the other way, too.