Continental Airlines Continental Overcharges active service personnel for extra luggage Internet

My son, who is on Active Duty, was transferred to Georgia from Connecticut. He came home for leave and recently flew Continental Airlines through Texas to Jacksonville Florida. Since he was being transferred he had all of his possessions with him which he packed into 1 large suitcase and three smaller cases as well as two carry-ons. The airline stipulates you can have up to three bags weighing no more than 70 kilos; his luggage came no where near that weight, but he had four bags to check in.