The corpsman may himself be a Muslim.
In any event, it does no harm. And such action would have beneficial propaganda value, both locally and throughout Islam.
Good move, I'd say.
In another photo that was taken along with this one was the Marine that was a Pashtun and was one of the few Pashtun speaking Americans in the group. His family was from Afghanistan originally and he was eagerly awaiting his American citizenship. After cleaning the mosque ... he prayed in it.
with lazy american and nato troops sitting on their butts in kosovo, over 113 christian churches were blown up by nato and american backed islamic terrorists, the kla!
luckily a few are still under nato guard as we speak today from islamic thugs like the kla!
america has no respect for christianity! kosovo was proof of this!