Here are some pics of a Washington Artillery piece and the newly remounted Confederate artillery.The Washington Artillery battery is the element with the flag and consists of a mixture of Foundry, Dixon and Redoubt miniatures. The gun is a Foundry 6-pounder. The other miniatures are mainly Old Glory. The guns are not attached to the elements so that any element can crew any gun.
Here is the Washington Artillery flag I created. It is copied from an original on display in a confederate museum.