I'm not sure if these are the correct DDS files you are looking for but you can have a look for nothing, they are in here.
Ubisoft\Silent Hunter Wolves of the Pacific\Data\Menu\Gui\Units
UnitSub
UnitSubL
UnitSubM
If they are the ones you are looking for you can uninstall TMO and delete the 3 files from TMO, then reinstall again.
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