Leonard Maingi Kiiyo was captured in January 2016 and is seen in this Al-Kataib-Al Shabaab video pleading for his life. Leonard is a doctor in the nursing section of the 9th Battalion Kenyan Rifles based in Moi Barracks. The attack on 15th January 2016 in El-Adde (wiki) resulted in a number of others being taken hostage as explained through the subtitled dialogue.
In the video Leonard addresses Uhuru Muigai Kenyatta, the commander in Chief of the Kenyan Army, as the director of the ill fated AMISOM manoeuvre crossing the Somalian border, asking for his help directly.
This is the largest defeat against the KDF since its independence in 1963.
further to the above video is another such production (released Sept 30 below) with David Ngugi Wataari
note the subtitles are enlarged for your convenience
UPDATE 17 Jan 2017
Video released of Ugandan soldier executed by Somalia’s al Shabaab militants. (Reuters)