Did anyone pursue a career in-line with their military specialty?

Your resume will reflect the shift in careers by your educational degree. Make sure to have an objectives statement on your resume that specifically outlines what you are looking for (usually the title of the job you are applying for). Then like you said, have great examples of leadership, management ability, critical thinking, decision-making, etc. that demonstrate your ability to thrive and succeed in the new environment. Just get to the interview step, then knock it out of the park. Have confidence.

As a 63150 POL - Fuel Specialist I parlayed that into a 27 year career in the oil business. I am now a Senior Oil Trader. 31 years since going active duty.

Well, I was a medic and retired as a 1SG with a BS in counseling and I finished a masters in psychology then a PhD in philosophy. I began my civilian career as a high school teacher and ended my 2nd career as an instructor teaching individuals to become classroom teachers. So, I would say to you that you have to play off your strengths, plan to retire again so pick a field you are interested in, and most important begin now. I heard all the complaints about not being able to accomplish much wile you're on active duty and with so many deployments its mostly true. So you have to take advantage of all any and all opportunities to prepare for your ETS/retirement.