You are correct.
My post concerned those who had completed their careers in the regular services. Not only do they retain their commissions. But those commissions are for life.
Those who have resigned their commissions have not completed an armed forces career. Though they have served honorably, they are no longer in the service.
Either the Armed Forces have a definition of the word "career" which is different from the one I'd use,or you and I are assigning different definitions to that word.
Ordinarily,those who serve honorably for at least 20 years (or less in cases of disability) are entitled to a pension.That's what I'd define as a "career".