I am not an expert on this subject but am aware that a number of civilians were buried in the Ma'alla cemetery. Sadly the graves suffered badly during the period of unrest following the departure of the Brits from Aden and many headstones and grave markers were destroyed.
I will send you an email with links to pictures of some of the Ma'alla graves and an address of a contact who may be able to help you further in your quest.
Hi Ann, I have been in the Christian graveyard in Ma'alla in 2007 and again in 2009 and while it is generally in neglect it is more from wear and tear than damage.It is quite a big graveyard and a good number of the headstones are still readable. Hope this helps.