As I remember the Gulf War, the Qataris were the ONLY local forces that appeared credible.
I think that they got tired of waiting for something to happen along the coast and just went on into Kuwait ahead of USMC.
Not, of course, that there are all that many of them but they seemed at that time at least to have credentials.
:Note to USMC vets, please don't rise in indignation, that's the way I remember it and if I'm wrong, so be it.
Qatar follows Wahabbi Islam just like Saudi Arabia. The Wahabbis are worse than normal Muslims.