I am not a lawyer but I'm glad you found my blog helpful.
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There are plenty of career opportunities for an ex-army officer in the corporate world. Most of these opportunities are in the management role in mainly operations or security and it’s irrelevant of their technical background.
But it’s always a better idea to pursue a good course while in service or immediately after release to get into a specialised industry. I personally know a officer who did a finance certification while in duty by doing self study and then join led a well reputed bank in a financial role inspite of his non technical background.
So,my advice would be to understand your passion, do some research, pursue necessary education and then there will be no limit of opportunities for you.