The final battle before Nightmare Moon was banished. You want more of the back-story.... all you can get at this stage is this. There are 4 alicorns on this picture. No you don't have to look deeper into this searching for some VERY VERY small alicorns. NO. You can see only 2 of them but there are 4.
I can post the NMM vector later if you want, so you will be able to see her armor from up close.
BIG HUG FROM NMM AND TIA FOR FAVING THIS WORK