African Union troops withdraw from base at stadium in Mogadishu African Union troops pull out of their base in Somalia's national stadium, freeing up the venue for sporting events for the first time in years. The AU's mission in Somalia (AMISOM) comprises some 20,000 troops split across several bases, one of which was the stadium in the capital Mogadishu where they have been stationed since 2011. IMAGES AND SOUNDBITES