Essendon was put through its paces in wet and soggy conditions at the NEC Hangar on Thursday.

A major highlight of training was the return of Conor McKenna, with the session marking the defender's first since returning from Ireland.

(View photos from the session below - click here to view on app)

The Bombers will be heavily focused on preparing for their second and final Marsh Community Series game, when they take on Geelong in Colac on Monday, March 9.