Its mean while the rest of the clan doing their mission, Umbre's fighting FL, then back to the mothership at the end of "Revenge" ?
alright so let me explain the order i think all the events take place.
1. Umbrella and Franky battle it out in an amazing battle that is nothing short of epic. the battle ultimately ends with both umbrella and franky being hit by a plane and both being injured/killed. umbrella still being alive somehow is taken back to umbrella hq.
2. Umbrella recovers after a few days/weeks (no amount of time specified) and is sent to fight Nemesis. this battle while fairly brief and quite devastating for Nemesis ends with Nemesis being the victors and Umbrella again being taken back to umbrella hq to heal and recover.
3. Again after a few days/weeks Umbrella starts recovering and begins training in some kind of virtual reality to test his new umbrella and wing pack.
4. The events of the Nemesis collab "Invasion" take place by orders of commander Red from umbrella HQ. The ultimate goal of this mission for the umbrella division is to take down the air base. rather than send all their troops to that 1 base, they spread out their forces to all 6 Nemesis base locations, forcing Nemesis to do the same with their members. The result, what they were after to begin with, the destruction of the airbase.
5. All the while the "Invasion" is happening Umbrella is honing his new wing pack while being limited to 1 umbrella to make sure the radiation doesnt kill him too quickly
6. After the Invasion mission is over and done with Commander Red finds out that Nemesis is getting their information supplied from FLLFFL (Alfa). By this point Umbrella is fully healed and has completely mastered his new wing pack after being upgraded. So Commander Red sends Umbrella to stop the flow of information to Nemesis by kill Alfa. In probably the best animation of resh's to date (my own opinion) Umbrella snatches the victory after an intense battle with the much more experience Alfa.
7. Somewhere between the Alfa battle and the events of the Nemesis collab "Revenge" Umbrella turns from the Umbrella Division and joins Nemesis after he learns that they have the cure to his radiation poisoning.
8. After a few days/weeks/months after the events of Invasion Nemesis along with their new member have regrouped and are ready to strike back at the invaders (at this point they don't know that its the Umbrella Division).
9. The events of Revenge take place.
so this leaves us just waiting for the final missing pieces and maybe a conclusion to the epic trilogy of collabs from Nemesis. Resh, Camila if I messed anything up or missed anything let me know, this is just how i think everything went down