Footage of Royal Marines from Somerset taking part in naked activities, shows members "letting off steam", the Ministry of Defence (MOD) has said.
The marines were filmed after a tour of duty, the MoD says
Images from a video published in a national newspaper include marines at 40 Commando base near Taunton being pelted with eggs and wrestling naked.
It follows scenes of alleged bullying at the 42 Commando published on Sunday.
The 40 Commando did not comment, but the MoD said they had no allegations of bullying stemming from the video.
Cross the line
The newspaper said its footage showed an initiation ceremony for new recruits to 40 Commando at their base in Taunton, Somerset.
The video apparently showed 16 rookies being forced to run around to the point of exhaustion while drinking cups of cider and eating Weetabix cereal covered in dirt.
The MoD said the footage was not thought to come from any kind of initiation ceremony but was filmed at a party of junior ranks after they had returned from a tour of Iraq.
A spokesperson said: "We fully recognise that our people need to have an opportunity to let off steam but must at all times ensure that this does not cross the line into unacceptable behaviour."