Protesters held a demonstration in support of the Elbit Nine in Cannock, Staffordshire, on Wednesday of last week.
The nine have been charged with aggravated trespass after occupying the roof of a drone engine factory in Shenstone.
The engines are used for drones in Israel.
The occupation brought production to a halt for two days.
The nine have pleaded not guilty and are due back in court in the autumn.