[whpalmer4]

Just set your view bar in the project view to show them, what could be easier? :-)

In 1.8 sneaky peek releases or later, set the Availability filter to Any status.

In 1.7.5 or earlier, set the Status filter to Any status.

In either case, you'll see the completed actions in the project itself, not taken out of context. If you want to see when they were completed, turn on the Completed column.