CRSC is compensation based on combat related injuries based on VA rating. For Ch. 61 retirees, CRSC is the lesser of the following 2 amounts, retired pay based on years of service or the amount rated by VA that is deemed combat related.
In my case, I was retired from the Army with 12 yrs 9 months in service as an E-6. My retired pay based on years of service is $1088. Calculation is as follows: High 3 is $3375, 12 yrs 9 months x 2.5= 32.25% for retirement purpose based on LOS so 32.25% of $3375=$1088 which is the amount for LOS.
Now, my combat related conditions that are rated by the VA equals to 80%. The amount for 80% disability, married with 2 children equals to $1782.
Because my CRSC is the lesser of the the two amounts, my monthly payment is $1088. If my retirement payment from DoD based on LOS had been greater than $1782 which is the amount for 80% VA rating, then my CRSC amount would have been $1782. Hope this helps.