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You would be considered Personnel Other than Grunt. Even though Combat Engineers also need to be trained as Infantryman, they are NOT Infantry. That is not their primary job. Technically even though you will be in the Engineer Corp, you are not even be considered a "Combat" Engineer. Just a Bridge Crew member. Not to worry. Your MOS is still vital to the Army. Even though I myself am an Infantry Veteran. I have long thought of going back in as an Engineer myself. Anyways. The best of luck to you, and your career soldier.
U.S. Army Veteran/ Grunt