Darth Jane (also known as Lauren) has recently released a new tool known as Assimilator. It loads any .skudef of a late SAGE game, such as Tiberium Wars, Kane's Wrath, Red Alert 3, Uprising and Tiberian Twilight, and then it lists all the W3D animations it contains. Then you can obtain the XML code for the animations listed there, and use it in your models without requiring to browse the depths of any of the old Art Packs released by EA.
You can download it at CNCNZ.com. However, it is worth mentioning that it requires Windows 7 SP1, Windows 8.1, or Windows 10 build 1607 or newer with .NET Core 3.x installed to run.