DURING the Middle Ages this type of device was used to lay siege to ancient strongholds by hurling diseased cows over castle walls.

But the good residents of Corfe Castle have no need to keep a watchful eye skyward for falling cattle, because today, thankfully, it is employed just for fun.

The replica trebuchet, around a quarter of the size of the massive siege engines employed by warring medieval kings, was being fired as part of a National Trust volunteer day at Corfe Castle.

Corfe Castle visitor experience officer Pam White explained: “Rather than batter the walls with it, one of the techniques was to hurl something into the middle of a castle – either dead, diseased animals or even bees’ nests.

“Certainly King John brought one to Corfe, which would have been dismantled and transported on carts.”

But it is uncertain if a trebuchet was ever fired in anger at Corfe during the Middle Ages, and it certainly wasn’t used in the musket and cannon era of the English Civil War.

“Obviously we are not in the habit of firing cows,” joked Pam. “We use footballs filled with water, which are fired about 50 metres, instead.”

Local scouts constructed a makeshift wall which is used as a target.

Pam said: “It is quite intricate to set up so we are limited on when we can use it, we certainly don’t have set times.”

Volunteers are needed at Corfe Castle to help with a host of activities, including help with the trebuchet, wearing authentic costumes, stone working, meeting and greeting, and a host of other arts and crafts.

Pam said: “Anyone is welcome to volunteer. One of our main criteria is to have fun, and it is a lovely way to meet people and do something different.” If you want more information on volunteering call Pam White on 01929 480 609.