The law is here. Basically it says that Louisiana residents who have been honorably discharged from active duty, the Reserves or the Army or Air National Guard, or folks in the military and stationed in Louisiana, may carry concealed without a permit. Requirements are pretty much the same as for a carry permit - must be able to legally own a firearm, can't go armed to places state and/or Federal law puts off-limits, etc. - you just don't need to have the permit. It does require some ID showing active duty or veteran status. It goes into effect on 8/1/22.