You have retired from the military so forget the concept of uniform: Blind obedience and levelling down is in the past. You should buy combinations of clothes that fit in with your job, personal colouring and which you enjoy wearing.
You should never buy 6 suits at one time. That being said, I love the tie choices just watch the pocket squares. They are usually reserved for complementing the tie in a more subtle way that is appealing to the eye. Ditch that red square for a burgundy one.