Under the assumption your child support order is from Illinois then the answer is yes, and yes. The court is required to review all forms of income you receive as defined by state law 750 ILCS 28/15.
Once you leave the military or any career and take on a different job the court is required to determine your "net income" with your new pay included once you file a petition to modify child support, per state law 750 ILCS 5/510. The court in this scenario will not hold you to a higher income standard because of retirement.
Now if you take on a lower paying civilian job and still receive additional income from your military benefits each will be included in determining your new "net income".
Neither of the above options will happen unless either your or the mother of your children file a petition to modify the current order for support.